Rename private methods of glance_http

These methods are used in glance_http module only, and we will
migrate the module to tempest-lib with images_client together.
So it is necessary to clarify these methods as private ones.

Partially implements blueprint consistent-service-method-names

Change-Id: Id27a99ed9f6973c67d7df0601b5fae40ca562de7
diff --git a/tempest/common/glance_http.py b/tempest/common/glance_http.py
index e5431a0..7860556 100644
--- a/tempest/common/glance_http.py
+++ b/tempest/common/glance_http.py
@@ -51,19 +51,20 @@
         self.endpoint_port = endpoint_parts.port
         self.endpoint_path = endpoint_parts.path
 
-        self.connection_class = self.get_connection_class(self.endpoint_scheme)
-        self.connection_kwargs = self.get_connection_kwargs(
+        self.connection_class = self._get_connection_class(
+            self.endpoint_scheme)
+        self.connection_kwargs = self._get_connection_kwargs(
             self.endpoint_scheme, **kwargs)
 
     @staticmethod
-    def get_connection_class(scheme):
+    def _get_connection_class(scheme):
         if scheme == 'https':
             return VerifiedHTTPSConnection
         else:
             return httplib.HTTPConnection
 
     @staticmethod
-    def get_connection_kwargs(scheme, **kwargs):
+    def _get_connection_kwargs(scheme, **kwargs):
         _kwargs = {'timeout': float(kwargs.get('timeout', 600))}
 
         if scheme == 'https':
@@ -75,7 +76,7 @@
 
         return _kwargs
 
-    def get_connection(self):
+    def _get_connection(self):
         _class = self.connection_class
         try:
             return _class(self.endpoint_hostname, self.endpoint_port,
@@ -95,7 +96,7 @@
 
         self._log_request(method, url, kwargs['headers'])
 
-        conn = self.get_connection()
+        conn = self._get_connection()
 
         try:
             url_parts = urlparse.urlparse(url)
diff --git a/tempest/tests/test_glance_http.py b/tempest/tests/test_glance_http.py
index 105caec..a446be6 100644
--- a/tempest/tests/test_glance_http.py
+++ b/tempest/tests/test_glance_http.py
@@ -141,22 +141,22 @@
         self.assertEqual(call_count - 1, req_body.tell())
 
     def test_get_connection_class_for_https(self):
-        conn_class = self.client.get_connection_class('https')
+        conn_class = self.client._get_connection_class('https')
         self.assertEqual(glance_http.VerifiedHTTPSConnection, conn_class)
 
     def test_get_connection_class_for_http(self):
-        conn_class = (self.client.get_connection_class('http'))
+        conn_class = (self.client._get_connection_class('http'))
         self.assertEqual(httplib.HTTPConnection, conn_class)
 
     def test_get_connection_http(self):
-        self.assertTrue(isinstance(self.client.get_connection(),
+        self.assertTrue(isinstance(self.client._get_connection(),
                                    httplib.HTTPConnection))
 
     def test_get_connection_https(self):
         endpoint = 'https://fake_url.com'
         self.fake_auth.base_url = mock.MagicMock(return_value=endpoint)
         self.client = glance_http.HTTPClient(self.fake_auth, {})
-        self.assertTrue(isinstance(self.client.get_connection(),
+        self.assertTrue(isinstance(self.client._get_connection(),
                                    glance_http.VerifiedHTTPSConnection))
 
     def test_get_connection_url_not_fount(self):
@@ -164,22 +164,22 @@
                                               side_effect=httplib.InvalidURL()
                                               ))
         self.assertRaises(exceptions.EndpointNotFound,
-                          self.client.get_connection)
+                          self.client._get_connection)
 
     def test_get_connection_kwargs_default_for_http(self):
-        kwargs = self.client.get_connection_kwargs('http')
+        kwargs = self.client._get_connection_kwargs('http')
         self.assertEqual(600, kwargs['timeout'])
         self.assertEqual(1, len(kwargs.keys()))
 
     def test_get_connection_kwargs_set_timeout_for_http(self):
-        kwargs = self.client.get_connection_kwargs('http', timeout=10,
-                                                   ca_certs='foo')
+        kwargs = self.client._get_connection_kwargs('http', timeout=10,
+                                                    ca_certs='foo')
         self.assertEqual(10, kwargs['timeout'])
         # nothing more than timeout is evaluated for http connections
         self.assertEqual(1, len(kwargs.keys()))
 
     def test_get_connection_kwargs_default_for_https(self):
-        kwargs = self.client.get_connection_kwargs('https')
+        kwargs = self.client._get_connection_kwargs('https')
         self.assertEqual(600, kwargs['timeout'])
         self.assertEqual(None, kwargs['ca_certs'])
         self.assertEqual(None, kwargs['cert_file'])
@@ -189,12 +189,12 @@
         self.assertEqual(6, len(kwargs.keys()))
 
     def test_get_connection_kwargs_set_params_for_https(self):
-        kwargs = self.client.get_connection_kwargs('https', timeout=10,
-                                                   ca_certs='foo',
-                                                   cert_file='/foo/bar.cert',
-                                                   key_file='/foo/key.pem',
-                                                   insecure=True,
-                                                   ssl_compression=False)
+        kwargs = self.client._get_connection_kwargs('https', timeout=10,
+                                                    ca_certs='foo',
+                                                    cert_file='/foo/bar.cert',
+                                                    key_file='/foo/key.pem',
+                                                    insecure=True,
+                                                    ssl_compression=False)
         self.assertEqual(10, kwargs['timeout'])
         self.assertEqual('foo', kwargs['ca_certs'])
         self.assertEqual('/foo/bar.cert', kwargs['cert_file'])