Fixing violations of E722 for flake8 checks

This change fixes violations of E722, the use of except without
specifying an exception type. For now the high-level Exception
class is used as a generic catchall. In the future these cases
will be updated to handle the specific exceptions expected.

kmip/tests/unit/services/server/test_server.py

@@ -17,7 +17,7 @@ import logging
 
 try:
     import unittest.mock as mock
-except:
+except Exception:
     import mock
 
 import signal