OCPBUGS-30090: manifests: make template manifests valid YAML

CVO manifests are applied by CVO itself, which processes them through the
templating engine, which makes them valid YAML. In an attempt to address
OCPBUGS-30090, I want to process the CVO manifests through `oc adm release new`
machinery, which requires them to be valid YAML.

Author: petr-muller

install/0000_00_cluster-version-operator_03_deployment.yaml

@@ -25,7 +25,7 @@ spec:
       automountServiceAccountToken: false
       containers:
       - name: cluster-version-operator
-        image: {{.ReleaseImage}}
+        image: "{{.ReleaseImage}}"
         imagePullPolicy: IfNotPresent
         args:
           - "start"
@@ -58,7 +58,6 @@ spec:
             name: kube-api-access
             readOnly: true
         env:
-          # Unfortunately the placeholder is not replaced, reported as OCPBUGS-30080
           - name: OPERATOR_IMAGE_VERSION
             value: "0.0.1-snapshot"
           - name: KUBERNETES_SERVICE_PORT # allows CVO to communicate with apiserver directly on same host.  Is substituted with port from infrastructures.status.apiServerInternalURL if available.
@@ -70,7 +69,7 @@ spec:
               fieldRef:
                 fieldPath: spec.nodeName
           - name: CLUSTER_PROFILE
-            value: {{ .ClusterProfile }}
+            value: "{{ .ClusterProfile }}"
       # this pod is hostNetwork and uses the internal LB DNS name when possible, which the kubelet also uses.
       # this dnsPolicy allows us to use the same dnsConfig as the kubelet, without access to read it ourselves.
       dnsPolicy: Default

install/0000_00_update-status-controller_03_deployment-DevPreviewNoUpgrade.yaml

@@ -26,7 +26,7 @@ spec:
         runAsNonRoot: true
       containers:
       - name: update-status-controller
-        image: {{.ReleaseImage}}
+        image: "{{.ReleaseImage}}"
         imagePullPolicy: IfNotPresent
         args:
         - "update-status-controller"