ci: add mini-e2e-helm Jenkins job

The mini-e2e-helm.groovy script is mostly a copy of mini-e2e.groovy that
does the deployment through the e2e.test executable. The new script
installs Helm and deploys Ceph-CSI through that.

Once the e2e tests have successfully finished, the deployment of
Ceph-CSI is removed again.

Signed-off-by: Niels de Vos <ndevos@redhat.com>

jobs/mini-e2e.yaml

@@ -6,6 +6,7 @@
       - '1.18.5'
     jobs:
       - 'mini-e2e_k8s-{k8s_version}'
+      - 'mini-e2e-helm_k8s-{k8s_version}'
 
 - job-template:
     name: 'mini-e2e_k8s-{k8s_version}'
@@ -50,3 +51,47 @@
             - nixpanic
           org-list:
             - ceph
+
+- job-template:
+    name: 'mini-e2e-helm_k8s-{k8s_version}'
+    project-type: pipeline
+    sandbox: true
+    concurrent: true
+    properties:
+      - github:
+          url: https://github.com/ceph/ceph-csi
+      - build-discarder:
+          days-to-keep: 7
+          artifact-days-to-keep: 7
+    # default variables
+    k8s_version: '<unset>'
+    # generated parameters for the job (used in the groovy script)
+    parameters:
+      - string:
+          name: k8s_version
+          default: '{k8s_version}'
+          description: Kubernetes version to deploy in the test cluster.
+    pipeline-scm:
+      scm:
+        - git:
+            name: origin
+            url: https://github.com/ceph/ceph-csi
+            branches:
+              - ci/centos
+      script-path: mini-e2e-helm.groovy
+      lightweight-checkout: true
+    triggers:
+      - github-pull-request:
+          status-context: 'ci/centos/mini-e2e-helm/k8s-{k8s_version}'
+          # yamllint disable-line rule:line-length
+          trigger-phrase: '/(re)?test ((all)|(ci/centos/mini-e2e-helm(/k8s-{k8s_version})?))'
+          permit-all: true
+          # TODO: set github-hooks to true when it is configured in GitHub
+          github-hooks: false
+          cron: 'H/5 * * * *'
+          black-list-target-branches:
+            - ci/centos
+          admin-list:
+            - nixpanic
+          org-list:
+            - ceph