Merge "Fix music-cassandra statefulset failing"

diff --cc kubernetes/common/music/charts/music-cassandra/templates/statefulset.yaml
index cdea9e3,da50744..4499499
--- 1/kubernetes/common/music/charts/music-cassandra/templates/statefulset.yaml
--- 2/kubernetes/common/music/charts/music-cassandra/templates/statefulset.yaml
+++ b/kubernetes/common/music/charts/music-cassandra/templates/statefulset.yaml
@@@ -134,6 -134,7 +134,8 @@@ spec
              storage: {{ .Values.persistence.size | quote }}
          selector:
            matchLabels:
 +            app: {{ include "common.name" . }}
              release: "{{ .Release.Name }}"
    {{- end }}
+       imagePullSecrets:
+       - name: "{{ include "common.namespace" . }}-docker-registry-key"