manifests: specify service account names on azure cred request

also add "Storage Blob Data Contributor" role, otherwise the registry
does not have permission to do anything in the container.

Author: flavianmissi

manifests/01-registry-credentials-request-azure.yaml

@@ -10,11 +10,15 @@ metadata:
     include.release.openshift.io/self-managed-high-availability: "true"
     include.release.openshift.io/single-node-developer: "true"
 spec:
+  serviceAccountNames:
+  - cluster-image-registry-operator
+  - registry
   secretRef:
     name: installer-cloud-credentials
     namespace: openshift-image-registry
   providerSpec:
     apiVersion: cloudcredential.openshift.io/v1
     kind: AzureProviderSpec
     roleBindings:
+    - role: Storage Blob Data Contributor
     - role: Contributor