Support images overrides

Adds ability to override images in osh and osh-i repositories
if docker_images dict is provided with tags following zuul-jobs
upload-docker-image naming convention.

This allows to inherit osh job from osh-images project providing
required vars.

Change-Id: I5e7acb0dd0edd6838b6f7ddb5111db0fa34912d4
Signed-off-by: Andrii Ostapenko <andrii.ostapenko@att.com>

playbooks/osh-infra-gate-runner.yaml

@@ -13,6 +13,10 @@
 ---
 - hosts: primary
   tasks:
+    - name: Override images
+      include_role:
+        name: override-images
+      when: docker_images is defined
     - name: "creating directory for run artifacts"
       file:
         path: "/tmp/artifacts"

roles/override-images/defaults/main.yaml

@@ -0,0 +1,15 @@
+# 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.
+
+---
+work_dir: "{{ zuul.project.src_dir }}"
+...

roles/override-images/tasks/main.yaml

@@ -0,0 +1,28 @@
+# 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.
+
+---
+- name: Create test images overrides
+  shell: >
+    find {{ work_dir }}/../openstack-helm*/*/values* -type f -exec sed -i
+    's#\({{ item.repository }}\):\({{ item.tags[0] }}\)#\1:{{ prefix }}_\2#g' {} +
+  loop: "{{ docker_images }}"
+  vars:
+    prefix: "{{ zuul.change | default(false) | ternary('change_' + zuul.change, 'periodic') }}"
+
+- name: Diff
+  shell: |
+      for dir in openstack-helm openstack-helm-infra; do
+        echo "${dir} diff"
+        cd {{ work_dir }}/../${dir}/; git diff;
+      done
+...