Fix some new PEP8 errors found at gate

This patch removes the 'author' tag which now fails to pass PEP8 tests
and also adds some missing newlines in source files. These newly found
PEP8 errors are blocking us from merging code.

Change-Id: Ib5c4c043c1df5cd980e09d26d130150b2e6d64c2
diff --git a/common/remote_client.py b/common/remote_client.py
index 2955418..f0405b8 100644
--- a/common/remote_client.py
+++ b/common/remote_client.py
@@ -143,7 +143,7 @@
         connection.close()
 
 
-class RemoteClient():
+class RemoteClient(object):
 
     # NOTE(afazekas): It should always get an address instead of server
     def __init__(self, server, username, password=None, pkey=None,