image pushing: more Kubernetes-CSI repos and branches, separate dashb…

…oard

As discussed in kubernetes#17741
it's fine to enable jobs that will not succeed.

A separate dashboard gets added because it's easier than trying to
determine per repo where the job is meant to be shown and because it
might be useful to check all of those jobs at one glance.

config/jobs/image-pushing/k8s-staging-csi-gen.sh

@@ -16,8 +16,13 @@
 output="$(dirname $0)/k8s-staging-csi.yaml"
 repos="
 csi-driver-host-path
+csi-driver-iscsi
+csi-driver-nfs
+csi-driver-smb
+csi-proxy
 csi-test
 external-attacher
+external-health-monitor
 external-provisioner
 external-resizer
 external-snapshotter
@@ -37,16 +42,16 @@ for repo in $repos; do
     - name: post-$repo-push-images
       cluster: k8s-infra-prow-build-trusted
       annotations:
-        testgrid-dashboards: sig-storage-csi-$repo
+        testgrid-dashboards: sig-storage-image-build
       decorate: true
       branches:
-        # For publishing canary images. Publishing canary images for release branches can
-        # be added later, but then will depend on which release branches in each repo have
-        # the necessary cloud build files.
+        # For publishing canary images.
         - ^master$
-        # This is a regex for semver, from https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string.
-        # This is okay for upcoming releases, but old releases will not have the necessary cloud build
-        # files and thus the job will fail.
+        - ^release-
+        # For publishing tagged images. Those will only get built once, i.e.
+        # existing images are not getting overwritten. A new tag must be set to
+        # trigger another image build. Images are only built for tags that follow
+        # the semver format (regex from https://semver.org/#is-there-a-suggested-regular-expression-regex-to-check-a-semver-string).
         - ^v(0|[1-9]\d*)\.(0|[1-9]\d*)\.(0|[1-9]\d*)(?:-((?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*)(?:\.(?:0|[1-9]\d*|\d*[a-zA-Z-][0-9a-zA-Z-]*))*))?(?:\+([0-9a-zA-Z-]+(?:\.[0-9a-zA-Z-]+)*))?$
       spec:
         serviceAccountName: gcb-builder