Add tests for python-cinderclient and style fix

Add test for cinder extra-specs-list command output.
Add test for cinder list-extension command output.
Fix pep8 issues "E128 continuation line under-indented for visual
indent" in other functions.

Change-Id: I28266af7a6ff23b83899c50cc230f926a44592dc
Partial-Bug: #1463404

cinderclient/tests/functional/test_readonly_cli.py

@@ -55,6 +55,11 @@ class CinderClientReadOnlyTests(base.ClientTestBase):
             self.assertTrue(2 >= len(headers))
             self.assertEqual('Value', headers[1])
 
+    def test_extra_specs_list(self):
+        extra_specs_list = self.cinder('extra-specs-list')
+        self.assertTableHeaders(extra_specs_list, ['ID', 'Name',
+                                                   'extra_specs'])
+
     def test_list(self):
         list = self.cinder('list')
         self.assertTableHeaders(list, ['ID', 'Status', 'Name', 'Size',
@@ -73,7 +78,8 @@ class CinderClientReadOnlyTests(base.ClientTestBase):
     def test_service_list(self):
         service_list = self.cinder('service-list')
         self.assertTableHeaders(service_list, ['Binary', 'Host', 'Zone',
-                                              'Status', 'State', 'Updated_at'])
+                                               'Status', 'State',
+                                               'Updated_at'])
 
     def test_snapshot_list(self):
         snapshot_list = self.cinder('snapshot-list')
@@ -87,3 +93,8 @@ class CinderClientReadOnlyTests(base.ClientTestBase):
     def test_type_list(self):
         type_list = self.cinder('type-list')
         self.assertTableHeaders(type_list, ['ID', 'Name'])
+
+    def test_list_extensions(self):
+        list_extensions = self.cinder('list-extensions')
+        self.assertTableHeaders(list_extensions, ['Name', 'Summary', 'Alias',
+                                                  'Updated'])