Memberships: Use external volume, remove one from the Helm chart.

Change-Id: Ie2afcd9ab28a12e7d6bea6375a96e00a0f63b525
diff --git a/charts/memberships/templates/install.yaml b/charts/memberships/templates/install.yaml
index 1d0034b..dee0f59 100644
--- a/charts/memberships/templates/install.yaml
+++ b/charts/memberships/templates/install.yaml
@@ -64,4 +64,4 @@
       volumes:
       - name: memberships
         persistentVolumeClaim:
-          claimName: memberships
+          claimName: {{ .Values.volumeClaimName }}
diff --git a/charts/memberships/templates/volume.yaml b/charts/memberships/templates/volume.yaml
deleted file mode 100644
index 48bbcb8..0000000
--- a/charts/memberships/templates/volume.yaml
+++ /dev/null
@@ -1,11 +0,0 @@
-apiVersion: v1
-kind: PersistentVolumeClaim
-metadata:
-  name: memberships
-  namespace: {{ .Release.Namespace }}
-spec:
-  accessModes:
-    - ReadWriteOnce
-  resources:
-    requests:
-      storage: {{ .Values.storage.size }}
diff --git a/charts/memberships/values.yaml b/charts/memberships/values.yaml
index c4be0f8..7dab384 100644
--- a/charts/memberships/values.yaml
+++ b/charts/memberships/values.yaml
@@ -2,6 +2,5 @@
   repository: giolekva/memberships
   tag: latest
   pullPolicy: Always
-storage:
-  size: 1Gi
+volumeClaimName: "data"
 portName: http