Tighten flake8 checks in Gating

There are a few checks that already pass:
 - F401 - unused imports of modules
 - F403 - ‘from module import *’ used; unable to detect undefined names

And there are two (H401 and H403) that can be made
passing easily. Enable gating on all of them.

Change-Id: I9d3c49ecea1b2171d194ab6cc751316c252081e8

1 files changed, 4 insertions, 2 deletions

diff --git a/troveclient/exceptions.py b/troveclient/exceptions.py
index 23db77e..5cfd235 100644
--- a/troveclient/exceptions.py
+++ b/troveclient/exceptions.py
@@ -20,7 +20,8 @@
 
 class UnsupportedVersion(Exception):
     """Indicates that the user is trying to use an unsupported
-    version of the API"""
+    version of the API.
+    """
     pass
 
 
@@ -38,7 +39,8 @@ class NoUniqueMatch(Exception):
 
 class NoTokenLookupException(Exception):
     """This form of authentication does not support looking up
-       endpoints from an existing token."""
+       endpoints from an existing token.
+    """
     pass