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diff --git a/django/cms/envbool.py b/django/cms/envbool.py
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+# ============LICENSE_START========================================== 
+# org.onap.vvp/cms
+# ===================================================================
+# Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+# ===================================================================
+#
+# Unless otherwise specified, all software contained herein is licensed
+# under the Apache License, Version 2.0 (the “License”);
+# you may not use this software 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.
+#
+#
+#
+# Unless otherwise specified, all documentation contained herein is licensed
+# under the Creative Commons License, Attribution 4.0 Intl. (the “License”);
+# you may not use this documentation except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#             https://creativecommons.org/licenses/by/4.0/
+#
+# Unless required by applicable law or agreed to in writing, documentation
+# 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.
+#
+# ============LICENSE_END============================================
+#
+# ECOMP is a trademark and service mark of AT&T Intellectual Property.
+import os
+
+def envbool(key, default=False, unknown=True):
+    """Return a boolean value based on that of an environment variable.
+
+    Environment variables have no native boolean type. They are always strings, and may be empty or
+    unset (which differs from empty.) Furthermore, notions of what is "truthy" in shell script
+    differ from that of python.
+
+    This function converts environment variables to python boolean True or False in
+    case-insensitive, expected ways to avoid pitfalls:
+
+        "True", "true", and "1" become True
+        "False", "false", and "0" become False
+        unset or empty becomes False by default (toggle with 'default' parameter.)
+        any other value becomes True by default (toggle with 'unknown' parameter.)
+
+    """
+    return {
+        'true': True, '1': True, # 't': True,
+        'false': False, '0': False, # 'f': False.
+        '': default,
+        }.get(os.getenv(key, '').lower(), unknown)