Adds granularity support in OpenStack vim config

Adds global config class in core
Reorders common_consumer conditional blocks
Adds support for OS_DEFAULT_GRANULARITY env var
Modifies tests to support changes

Change-Id: I873b8d24814825bff6e628092942bf16fa5e2a03
Signed-off-by: Benjamin Diaz <bdiaz@whitestack.com>
diff --git a/osm_mon/test/OpenStack/test_settings.py b/osm_mon/test/OpenStack/test_settings.py
index 0f924ce..42619f8 100644
--- a/osm_mon/test/OpenStack/test_settings.py
+++ b/osm_mon/test/OpenStack/test_settings.py
@@ -22,14 +22,10 @@
 """Tests for settings for OpenStack plugins configurations."""
 
 import logging
-
 import os
-
 import unittest
 
-import mock
-
-from osm_mon.plugins.OpenStack.settings import Config
+from osm_mon.core.settings import Config
 
 log = logging.getLogger(__name__)