Rename command to audit

This patchset is there to change the code structure.

Some Python class and packages need to be renamed
for a better compliance with the shared terminology
which provides a better understanding of Watcher
objects and components by every contributor.

This patchset is there to rename the folder command to audit

Partially implements: blueprint glossary-related-refactoring

Change-Id: I76616fb58d5e79a7dc209b80e882d216850d18a4

watcher/decision_engine/audit/base.py

@@ -0,0 +1,27 @@
+# -*- encoding: utf-8 -*-
+# Copyright (c) 2015 b<>com
+#
+# Authors: Jean-Emile DARTOIS <jean-emile.dartois@b-com.com>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+import abc
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class BaseAuditHandler(object):
+    @abc.abstractmethod
+    def execute(self):
+        raise NotImplementedError()