apply-helm-charts: Job to apply Helm charts

This job deploys a Kubernetes cluster and then runs all the
Helm charts provided.

Change-Id: If6c4a6d5bce912f55549d16175554154c86dd25a

doc/source/helm-jobs.rst

@@ -1,4 +1,5 @@
 Helm Jobs
 =========
 
+.. zuul:autojob:: apply-helm-charts
 .. zuul:autojob:: chart-testing-lint

playbooks/helm/post.yaml

@@ -0,0 +1,3 @@
+- hosts: all
+  roles:
+    - collect-container-logs

playbooks/helm/pre.yaml

@@ -0,0 +1,5 @@
+- hosts: all
+  roles:
+    - role: clear-firewall
+    - role: install-kubernetes
+    - role: ensure-helm

playbooks/helm/run.yaml

@@ -0,0 +1,8 @@
+- hosts: all
+  tasks:
+    - include_role:
+        name: helm-template
+      vars:
+        helm_release_name: "{{ item.key }}"
+        helm_chart: "{{ item.value }}"
+      loop: "{{ helm_charts | dict2items }}"

zuul.d/helm-jobs.yaml

@@ -4,3 +4,11 @@
       Run chart-testing on Helm charts
     pre-run: playbooks/chart-testing/pre.yaml
     run: playbooks/chart-testing/run.yaml
+
+- job:
+    name: apply-helm-charts
+    description: |
+      Deploy a Kubernetes cluster and apply charts
+    pre-run: playbooks/helm/pre.yaml
+    run: playbooks/helm/run.yaml
+    post-run: playbooks/helm/post.yaml