Remove setup_clients

As tempest.scenario.manager was announced stable interface in Tempest
27.0.0[1] it can be now reused in plugins.

Deleted methods:
        * setup_clients

Etherpad concerning this effort:
https://etherpad.opendev.org/p/tempest-scenario-manager-cleanup

[1] https://docs.openstack.org/releasenotes/tempest/v27.0.0.html#release-notes-27-0-0

Change-Id: I3f63b3a0d4fd60b7824550f5c3deeb8cdb3d9ca9
diff --git a/manila_tempest_tests/tests/scenario/manager.py b/manila_tempest_tests/tests/scenario/manager.py
index d533e22..a73ab44 100644
--- a/manila_tempest_tests/tests/scenario/manager.py
+++ b/manila_tempest_tests/tests/scenario/manager.py
@@ -31,45 +31,6 @@
 class ScenarioTest(manager.NetworkScenarioTest):
     """Base class for scenario tests. Uses tempest own clients. """
 
-    credentials = ['primary']
-
-    @classmethod
-    def setup_clients(cls):
-        super(ScenarioTest, cls).setup_clients()
-        # Clients (in alphabetical order)
-        cls.flavors_client = cls.os_primary.flavors_client
-        cls.compute_floating_ips_client = (
-            cls.os_primary.compute_floating_ips_client)
-        if CONF.service_available.glance:
-            # Check if glance v1 is available to determine which client to use.
-            if CONF.image_feature_enabled.api_v1:
-                cls.image_client = cls.os_primary.image_client
-            elif CONF.image_feature_enabled.api_v2:
-                cls.image_client = cls.os_primary.image_client_v2
-            else:
-                raise lib_exc.InvalidConfiguration(
-                    'Either api_v1 or api_v2 must be True in '
-                    '[image-feature-enabled].')
-        # Compute image client
-        cls.compute_images_client = cls.os_primary.compute_images_client
-        cls.keypairs_client = cls.os_primary.keypairs_client
-        # Nova security groups client
-        cls.compute_security_groups_client = (
-            cls.os_primary.compute_security_groups_client)
-        cls.compute_security_group_rules_client = (
-            cls.os_primary.compute_security_group_rules_client)
-        cls.servers_client = cls.os_primary.servers_client
-        cls.interface_client = cls.os_primary.interfaces_client
-        # Neutron network client
-        cls.networks_client = cls.os_primary.networks_client
-        cls.ports_client = cls.os_primary.ports_client
-        cls.routers_client = cls.os_primary.routers_client
-        cls.subnets_client = cls.os_primary.subnets_client
-        cls.floating_ips_client = cls.os_primary.floating_ips_client
-        cls.security_groups_client = cls.os_primary.security_groups_client
-        cls.security_group_rules_client = (
-            cls.os_primary.security_group_rules_client)
-
     # ## Test functions library
     #
     # The create_[resource] functions only return body and discard the
@@ -140,8 +101,6 @@
 
     """
 
-    credentials = ['primary', 'admin']
-
     @classmethod
     def skip_checks(cls):
         super(NetworkScenarioTest, cls).skip_checks()
diff --git a/manila_tempest_tests/tests/scenario/manager_share.py b/manila_tempest_tests/tests/scenario/manager_share.py
index b3f6244..a847217 100644
--- a/manila_tempest_tests/tests/scenario/manager_share.py
+++ b/manila_tempest_tests/tests/scenario/manager_share.py
@@ -49,6 +49,8 @@
     def setup_clients(cls):
         super(ShareScenarioTest, cls).setup_clients()
 
+        cls.compute_floating_ips_client = (
+            cls.os_primary.compute_floating_ips_client)
         # Manila clients
         cls.shares_client = cls.os_primary.share_v1.SharesClient()
         cls.shares_v2_client = cls.os_primary.share_v2.SharesV2Client()