Fix some reST field lists in docstrings

Probably the most common format for documenting arguments is reST field
lists [1]. This change updates some docstrings to comply with the field
lists syntax.

[1] http://sphinx-doc.org/domains.html#info-field-lists

Change-Id: If115f76d6f26108e55fb3460f36283f943ee61fb

octavia/tests/tempest/common/manager.py

@@ -579,7 +579,7 @@ class ScenarioTest(tempest.test.BaseTestCase):
             negative - attempt ping and fail if succeed
         :param mtu: network MTU to use for connectivity validation
 
-        :raises: AssertError if the result of the connectivity check does
+        :raises AssertError: if the result of the connectivity check does
             not match the value of the should_connect param
         """
         if should_connect:
@@ -881,7 +881,7 @@ class NetworkScenarioTest(ScenarioTest):
 
         :param dict floating_ip: floating IP dict to check status
         :param status: target status
-        :raises: AssertionError if status doesn't match
+        :raises AssertionError: if status doesn't match
         """
         floatingip_id = floating_ip['id']
 

octavia/tests/tempest/v1/scenario/base.py

@@ -424,7 +424,7 @@ class BaseTestCase(manager.NetworkScenarioTest):
 
         :param dict floating_ip: floating IP dict to check status
         :param status: target status
-        :raises: AssertionError if status doesn't match
+        :raises AssertionError: if status doesn't match
         """
 
         # TODO(ptoohill): Find a way to utilze the proper client method

octavia/tests/tempest/v2/scenario/base.py

@@ -415,7 +415,7 @@ class BaseTestCase(manager.NetworkScenarioTest):
 
         :param dict floating_ip: floating IP dict to check status
         :param status: target status
-        :raises: AssertionError if status doesn't match
+        :raises AssertionError: if status doesn't match
         """
 
         # TODO(ptoohill): Find a way to utilze the proper client method