Improve docstring examples

This commit improves docstring examples. The original examples are
written in interactive mode style. However, I feel it's weird when it is
multiple lines, especially. So, this commit just removes '>>> ' and
updates some code block attributes.

Change-Id: I2f46042607c0f57d93634fbdffbb4400256a8489
diff --git a/tempest/lib/services/clients.py b/tempest/lib/services/clients.py
index 1c8f443..cd3bab0 100644
--- a/tempest/lib/services/clients.py
+++ b/tempest/lib/services/clients.py
@@ -72,15 +72,15 @@
     :raise PluginRegistrationException: if a plugin exposes a service_version
         already defined by Tempest or another plugin.
 
-    Examples:
+    Examples::
 
-        >>> from tempest import config
-        >>> params = {}
-        >>> for service_version in available_modules():
-        >>>     service = service_version.split('.')[0]
-        >>>     params[service] = config.service_client_config(service)
-        >>> service_clients = ServiceClients(creds, identity_uri,
-        >>>                                  client_parameters=params)
+        from tempest import config
+        params = {}
+        for service_version in available_modules():
+            service = service_version.split('.')[0]
+            params[service] = config.service_client_config(service)
+        service_clients = ServiceClients(creds, identity_uri,
+                                         client_parameters=params)
     """
     extra_service_versions = set([])
     _tempest_modules = set(tempest_modules())
@@ -163,17 +163,17 @@
             parameters cannot be deleted.
         :raise ImportError if the specified module_path cannot be imported
 
-        Example:
+        Example::
 
-            >>> # Get credentials and an auth_provider
-            >>> clients = ClientsFactory(
-            >>>     module_path='my_service.my_service_clients',
-            >>>     client_names=['ServiceClient1', 'ServiceClient2'],
-            >>>     auth_provider=auth_provider,
-            >>>     service='my_service',
-            >>>     region='region1')
-            >>> my_api_client = clients.MyApiClient()
-            >>> my_api_client_region2 = clients.MyApiClient(region='region2')
+            # Get credentials and an auth_provider
+            clients = ClientsFactory(
+                module_path='my_service.my_service_clients',
+                client_names=['ServiceClient1', 'ServiceClient2'],
+                auth_provider=auth_provider,
+                service='my_service',
+                region='region1')
+            my_api_client = clients.MyApiClient()
+            my_api_client_region2 = clients.MyApiClient(region='region2')
 
         """
         # Import the module. If it's not importable, the raised exception
@@ -244,19 +244,19 @@
     It hides some of the complexity from the authorization and configuration
     layers.
 
-    Examples:
+    Examples::
 
-        >>> # johndoe is a tempest.lib.auth.Credentials type instance
-        >>> johndoe_clients = clients.ServiceClients(johndoe, identity_uri)
-        >>>
-        >>> # List servers in default region
-        >>> johndoe_servers_client = johndoe_clients.compute.ServersClient()
-        >>> johndoe_servers = johndoe_servers_client.list_servers()
-        >>>
-        >>> # List servers in Region B
-        >>> johndoe_servers_client_B = johndoe_clients.compute.ServersClient(
-        >>>     region='B')
-        >>> johndoe_servers = johndoe_servers_client_B.list_servers()
+        # johndoe is a tempest.lib.auth.Credentials type instance
+        johndoe_clients = clients.ServiceClients(johndoe, identity_uri)
+
+        # List servers in default region
+        johndoe_servers_client = johndoe_clients.compute.ServersClient()
+        johndoe_servers = johndoe_servers_client.list_servers()
+
+        # List servers in Region B
+        johndoe_servers_client_B = johndoe_clients.compute.ServersClient(
+            region='B')
+        johndoe_servers = johndoe_servers_client_B.list_servers()
 
     """
     # NOTE(andreaf) This class does not depend on tempest configuration
@@ -305,14 +305,14 @@
         Registry automatically for all service client (Tempest stable ones
         and plugins).
 
-        Examples:
+        Examples::
 
-            >>> identity_params = config.service_client_config('identity')
-            >>> params = {
-            >>>     'identity': identity_params,
-            >>>     'compute': {'region': 'region2'}}
-            >>> manager = lib_manager.Manager(
-            >>>     my_creds, identity_uri, client_parameters=params)
+            identity_params = config.service_client_config('identity')
+            params = {
+                'identity': identity_params,
+                'compute': {'region': 'region2'}}
+            manager = lib_manager.Manager(
+                my_creds, identity_uri, client_parameters=params)
 
         :param credentials: An instance of `auth.Credentials`
         :param identity_uri: URI of the identity API. This should be a
@@ -328,7 +328,6 @@
             name, as declared in `service_clients.available_modules()` except
             for the version. Values are dictionaries of parameters that are
             going to be passed to all clients in the service client module.
-
         """
         self._registered_services = set([])
         self.credentials = credentials
diff --git a/tempest/test_discover/plugins.py b/tempest/test_discover/plugins.py
index 613ab92..9f75962 100644
--- a/tempest/test_discover/plugins.py
+++ b/tempest/test_discover/plugins.py
@@ -51,36 +51,37 @@
         :param ConfigOpts conf: The conf object that can be used to register
             additional options on.
 
-        Example:
-            >>> # Config options are defined in a config.py module
-            >>> service_option = cfg.BoolOpt(
-            >>>     "my_service",
-            >>>     default=True,
-            >>>     help="Whether or not my service is available")
-            >>>
-            >>> # Note: as long as the group is listed in get_opt_lists,
-            >>> # it will be possible to access its optins in the plugin code
-            >>> # via ("-" in the group name are replaces with "_"):
-            >>> #     CONF.my_service.<option_name>
-            >>> my_service_group = cfg.OptGroup(name="my-service",
-            >>>                                 title="My service options")
-            >>>
-            >>> MyServiceGroup = [<list of options>]
-            >>> # (...) More groups and options...
-            >>>
-            >>> # Plugin is implemented in a plugin.py module
-            >>> from my_plugin import config as my_config
-            >>>
-            >>> def register_opts(self, conf):
-            >>>    conf.register_opt(my_config.service_option,
-            >>>                      group='service_available')
-            >>>    conf.register_group(my_config.my_service_group)
-            >>>    conf.register_opts(my_config.MyService +
-            >>>                       my_config.my_service_group)
-            >>>
-            >>>    conf.register_group(my_config.my_service_feature_group)
-            >>>    conf.register_opts(my_config.MyServiceFeaturesGroup,
-            >>>                       my_config.my_service_feature_group)
+        Example::
+
+            # Config options are defined in a config.py module
+            service_option = cfg.BoolOpt(
+                "my_service",
+                default=True,
+                help="Whether or not my service is available")
+
+            # Note: as long as the group is listed in get_opt_lists,
+            # it will be possible to access its optins in the plugin code
+            # via ("-" in the group name are replaces with "_"):
+            #     CONF.my_service.<option_name>
+            my_service_group = cfg.OptGroup(name="my-service",
+                                            title="My service options")
+
+            MyServiceGroup = [<list of options>]
+            # (...) More groups and options...
+
+            # Plugin is implemented in a plugin.py module
+            from my_plugin import config as my_config
+
+            def register_opts(self, conf):
+                conf.register_opt(my_config.service_option,
+                                  group='service_available')
+                conf.register_group(my_config.my_service_group)
+                conf.register_opts(my_config.MyService +
+                                   my_config.my_service_group)
+
+                conf.register_group(my_config.my_service_feature_group)
+                conf.register_opts(my_config.MyServiceFeaturesGroup,
+                                   my_config.my_service_feature_group)
         """
         return
 
@@ -107,37 +108,41 @@
           of `service_clients.ServiceClients.register_service_client_module`.
         :rtype: list of dictionaries
 
-        Example:
+        Example implementation with one service client::
 
-            >>>  # Example implementation with one service client
-            >>>  myservice_config = config.service_client_config('myservice')
-            >>>  params = {
-            >>>     'name': 'myservice',
-            >>>     'service_version': 'myservice',
-            >>>     'module_path': 'myservice_tempest_tests.services',
-            >>>     'client_names': ['API1Client', 'API2Client'],
-            >>>  }
-            >>>  params.update(myservice_config)
-            >>>  return [params]
+            def get_service_clients(self):
+                # Example implementation with one service client
+                myservice_config = config.service_client_config('myservice')
+                params = {
+                    'name': 'myservice',
+                    'service_version': 'myservice',
+                    'module_path': 'myservice_tempest_tests.services',
+                    'client_names': ['API1Client', 'API2Client'],
+                }
+                params.update(myservice_config)
+                return [params]
 
-            >>>  # Example implementation with two service clients
-            >>>  foo1_config = config.service_client_config('foo')
-            >>>  params_foo1 = {
-            >>>     'name': 'foo_v1',
-            >>>     'service_version': 'foo.v1',
-            >>>     'module_path': 'bar_tempest_tests.services.foo.v1',
-            >>>     'client_names': ['API1Client', 'API2Client'],
-            >>>  }
-            >>>  params_foo1.update(foo_config)
-            >>>  foo2_config = config.service_client_config('foo')
-            >>>  params_foo2 = {
-            >>>     'name': 'foo_v2',
-            >>>     'service_version': 'foo.v2',
-            >>>     'module_path': 'bar_tempest_tests.services.foo.v2',
-            >>>     'client_names': ['API1Client', 'API2Client'],
-            >>>  }
-            >>>  params_foo2.update(foo2_config)
-            >>>  return [params_foo1, params_foo2]
+        Example implementation with two service clients::
+
+            def get_service_clients(self):
+                # Example implementation with two service clients
+                foo1_config = config.service_client_config('foo')
+                params_foo1 = {
+                    'name': 'foo_v1',
+                    'service_version': 'foo.v1',
+                    'module_path': 'bar_tempest_tests.services.foo.v1',
+                    'client_names': ['API1Client', 'API2Client'],
+                }
+                params_foo1.update(foo_config)
+                foo2_config = config.service_client_config('foo')
+                params_foo2 = {
+                    'name': 'foo_v2',
+                    'service_version': 'foo.v2',
+                    'module_path': 'bar_tempest_tests.services.foo.v2',
+                    'client_names': ['API1Client', 'API2Client'],
+                }
+                params_foo2.update(foo2_config)
+                return [params_foo1, params_foo2]
         """
         return []