Add generic Postgres set for DCAE

DCAE postgres set is based on Crunchy Data Statefulset Helm Example.
It provides a statefulSet of two postgres replicas.
Remaining work: tweak services and PVs. Adjust the chart to
  DCAE needs.

Change-Id: Ic05f88fcde5c5967ebd93f944f953262df77d7c6
Issue-ID: OOM-853
Signed-off-by: BorislavG <Borislav.Glozman@amdocs.com>
diff --git a/kubernetes/common/postgres/requirements.yaml b/kubernetes/common/postgres/requirements.yaml
new file mode 100644
index 0000000..e597fca
--- /dev/null
+++ b/kubernetes/common/postgres/requirements.yaml
@@ -0,0 +1,18 @@
+# Copyright © 2018 Amdocs, AT&T, Bell Canada
+#
+# 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.
+
+dependencies:
+  - name: common
+    version: ~2.0.0
+    repository: '@local'