feat(openstack): allow additional manifests to be deployed

Allow the user to define extra manifests in their values.yaml in their
deployment repo to deploy extra manifests with this chart.

Author: cardoe

components/openstack/templates/extra-manifests.yaml.tpl

@@ -0,0 +1,8 @@
+{{- range .Values.extraObjects }}
+---
+{{ if typeIs "string" . }}
+  {{- tpl . $ }}
+{{- else }}
+  {{- tpl (toYaml .) $ }}
+{{- end }}
+{{ end }}

components/openstack/values.yaml

@@ -1 +1,17 @@
 ---
+
+# -- Array of extra Kubernetes manifests to deploy
+extraObjects: []
+# - apiVersion: external-secrets.io/v1beta1
+#   kind: ExternalSecret
+#   metadata:
+#     name: my-secret
+#   spec:
+#     secretStoreREf:
+#       kind: ClusterSecretStore
+#       name: mystore
+#     target:
+#       name: my-secret
+#     dataFrom:
+#       - extract:
+#           key: my-secret-id