Install OSH Helm plugin

The OSH Helm plugin incapsulates two
helper scripts that are used in most
of test deployment scripts and provides
two subcommands

- get-values-overrides - generates values
  overrides file names from a set of given feature gates
- wait-for-pods - checks if all the containers of all running pods
  are ready and if all jobs are successfully completed

At the moment the plugin is put in a third party git repo
but later will be put to the opendev.org repo.

Change-Id: I8f30fbdf94d76ef9fa2985a25c033df290995326

roles/deploy-env/tasks/k8s_client.yaml

@@ -43,8 +43,14 @@
       args:
         executable: /bin/bash
 
+    - name: Install osh helm plugin
+      become: false
+      shell: |
+        helm plugin install https://github.com/kubepro/helm-plugin-osh.git
+
     # This is to improve build time
     - name: Remove stable Helm repo
+      become: false
       command: helm repo remove stable
       ignore_errors: true
 

roles/osh-run-script/tasks/main.yaml

@@ -30,5 +30,6 @@
     CONTAINER_DISTRO_NAME: "{{ osh_params.container_distro_name | default('') }}"
     CONTAINER_DISTRO_VERSION: "{{ osh_params.container_distro_version | default('') }}"
     FEATURE_GATES: "{{ osh_params.feature_gates | default('') }}"
+    FEATURES: "{{ osh_params.feature_gates | regex_replace(',', ' ') | default('') }} {{ osh_params.openstack_release | default('') }} {{ osh_params.container_distro_name | default('') }}_{{ osh_params.container_distro_version | default('') }} {{ osh_params.container_distro_name | default('') }}"
     RUN_HELM_TESTS: "{{ run_helm_tests | default('yes') }}"
 ...