Allow to configure service network policy

The patch introduces network policy configuration similar
to openstack-helm services. It allows users to configure
policies depending on the environment.

* Network policies are disabled by default.
* When enabled default policies allow all ingress and
  egress traffic (i.e. policy set to {}), this may be
  changed in future patch-sets.

Change-Id: I2705fcf1d322ed06b124811b4ab91bfdfbdeacf3

charts/drydock/templates/network_policy.yaml

@@ -0,0 +1,18 @@
+# Copyright 2017-2018 The Openstack-Helm Authors.
+#
+# 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.
+
+{{- if .Values.manifests.network_policy -}}
+{{- $netpol_opts := dict "envAll" . "name" "application" "label" "drydock" -}}
+{{ $netpol_opts | include "helm-toolkit.manifests.kubernetes_network_policy" }}
+{{- end -}}

charts/drydock/values.yaml

@@ -133,6 +133,13 @@ pod:
           memory: "128Mi"
           cpu: "100m"
 
+network_policy:
+  drydock:
+    ingress:
+      - {}
+    egress:
+      - {}
+
 manifests:
   job_ks_service: true
   job_ks_user: true
@@ -150,6 +157,7 @@ manifests:
   deployment_drydock: true
   test_drydock_api: true
   test_drydock_auth: true
+  network_policy: false
 
 dependencies:
   dynamic: