Add the Ansible human_log call back plugin

This change implements the human_log callback plugin within our plugins
repo. A v1/2 shim has been added as the base entry point to ensure the
callback plugin, if whitelisted, supports both Ansible V1 and V2.

Change-Id: Idad2623eeb7f73e20fe92d9e18cd99e45bc4b64f
Signed-off-by: Kevin Carter <kevin.carter@rackspace.com>

callback/human_log.py

@@ -0,0 +1,55 @@
+# Copyright 2016, Rackspace US, Inc.
+#
+# 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 os
+import sys
+
+from distutils.version import LooseVersion
+from ansible import __version__ as __ansible_version__
+
+import requests
+
+# This appends the sys path with the file path which is used for the
+#  import of the specific verion of the config_template action plugin
+#  needed based on the ansible version calling the plugin.
+DIRPATH = os.path.dirname(__file__)
+
+# NOTICE: These plugins are developed outside of OSA and can not be
+#  added to the main repository due to GPL conflicts in OpenStack.
+PLUGINS = {
+    'v1': 'https://gist.githubusercontent.com/cliffano/9868180/raw/'
+          'f32b76560b7c72cdc44e6aa0e9f46d0392f54a43/human_log.py',
+    'v2': 'https://raw.githubusercontent.com/rdo-infra/weirdo/master/'
+          'playbooks/library/human_log.py'
+}
+
+if DIRPATH not in sys.path:
+    sys.path.append(DIRPATH)
+
+def get_plugin(plugin, name):
+    req = requests.get(plugin, stream=True)
+    if req.status_code == 200:
+        with open(os.path.join(DIRPATH, name), 'wb') as f:
+            for chunk in req.iter_content(1024):
+                f.write(chunk)
+        return True
+    else:
+        return False
+
+if LooseVersion(__ansible_version__) < LooseVersion("2.0"):
+    if get_plugin(plugin=PLUGINS['v1'], name='_v1_human_log.py'):
+        from _v1_human_log import *
+else:
+    if get_plugin(plugin=PLUGINS['v2'], name='_v2_human_log.py'):
+        from _v2_human_log import *