Correct default zookeeper host to be compatible with zk charts (#5824)

incubator/patroni/Chart.yaml

@@ -1,6 +1,6 @@
 name: patroni
 description: 'Highly available elephant herd: HA PostgreSQL cluster.'
-version: 0.8.0
+version: 0.8.1
 appVersion: 1.4-p7
 home: https://github.com/zalando/patroni
 sources:

incubator/patroni/templates/statefulset-patroni.yaml

@@ -53,7 +53,7 @@ spec:
         {{- else if .Values.zookeeper.enable }}
         {{- if .Values.zookeeper.deployChart }}
         - name: ZOOKEEPER_HOSTS
-          value: {{(printf "'zk-%s-headless:2181'" .Release.Name | trunc 63)}}
+          value: {{(printf "'%s-zookeeper-headless:2181'" .Release.Name | trunc 63)}}
         {{- else }}
         - name: ZOOKEEPER_HOSTS
           value: {{ .Values.zookeeper.hosts | quote }}