hyperkube image in promenade init

Use hyperkube image for promenade init container.
It's purpose is to extract and cache hyperkube binary from image.
This binary will be used in promenade-api container as a backup plan.

Init container stores binary in a shared volume where
promenade-api container can use it. It will use it when
promenade config has no docker endpoint to call docker API
from promenade source code.

See https://review.opendev.org/657953 for reference.

Change-Id: I7edcb1acbe0d864324a4341c682bbcb9b110c4eb

charts/promenade/templates/deployment-api.yaml

@@ -17,7 +17,6 @@ limitations under the License.
 {{- if .Values.manifests.deployment_api }}
 {{- $envAll := . }}
 {{- $labels := tuple $envAll "promenade" "api" | include "helm-toolkit.snippets.kubernetes_metadata_labels" -}}
-{{- $mounts_init_container := .Values.pod.mounts.promenade_api.init_container }}
 {{- $mounts_promenade_api := .Values.pod.mounts.promenade_api.promenade_api }}
 ---
 apiVersion: apps/v1
@@ -53,13 +52,9 @@ spec:
       initContainers:
       - name: promenade-util
         command:
-{{- if and $mounts_init_container.volumeMounts $mounts_promenade_api.volumeMounts }}
+{{- if $mounts_promenade_api.volumeMounts }}
           - "cp"
-  {{- range $mounts_init_container.volumeMounts }}
+          - "/hyperkube"
-    {{- if eq "hyperkube" (index . "name") }}
-          - {{ index . "mountPath" | quote }}
-    {{- end }}
-  {{- end }}
   {{- range $mounts_promenade_api.volumeMounts }}
     {{- if eq "cache" (index . "name") }}
           - {{ index . "mountPath" | quote }}
@@ -68,10 +63,9 @@ spec:
 {{- else }}
           - "true"
 {{- end }}
-        image: {{ .Values.images.tags.monitoring_image }}
+        image: {{ .Values.images.tags.hyperkube }}
         imagePullPolicy: IfNotPresent
         volumeMounts:
-{{ if $mounts_init_container.volumeMounts }}{{ toYaml $mounts_init_container.volumeMounts | indent 8 }}{{ end }}
 {{ if $mounts_promenade_api.volumeMounts }}{{ toYaml $mounts_promenade_api.volumeMounts | indent 8 }}{{ end }}
       containers:
         - name: promenade-api
@@ -127,6 +121,5 @@ spec:
           configMap:
             name: promenade-etc
             defaultMode: 0444
-{{ if $mounts_init_container.volumes }}{{ toYaml $mounts_init_container.volumes | indent 8 }}{{ end }}
 {{ if $mounts_promenade_api.volumes }}{{ toYaml $mounts_promenade_api.volumes | indent 8 }}{{ end }}
 {{- end }}

charts/promenade/values.yaml

@@ -44,6 +44,7 @@ conf:
 images:
   tags:
     monitoring_image: busybox:1.28.3
+    hyperkube: gcr.io/google_containers/hyperkube-amd64:v1.11.6
     promenade: quay.io/airshipit/promenade:latest
     ks_user: docker.io/openstackhelm/heat:newton
     ks_service: docker.io/openstackhelm/heat:newton
@@ -177,15 +178,6 @@ pod:
   mounts:
     promenade_api:
       test_container: null
-      init_container:
-        volumeMounts:
-          - name: hyperkube
-            mountPath: /hyperkube
-        volumes:
-          - name: hyperkube
-            hostPath:
-              path: /opt/kubernetes/bin/hyperkube
-              type: File
       promenade_api:
         volumeMounts:
           - name: cache