Remove unused pod-etc-apache volumes

This removes unused pod-etc-apache volumes from the charts that
use an apache sidecar container as a reverse proxy.

Change-Id: Ibafff3b53f9d3c20f5aed30d40ee6470cb515a8a

elasticsearch/templates/deployment-client.yaml

@@ -208,8 +208,6 @@ spec:
               mountPath: {{ .Values.conf.elasticsearch.config.path.data }}
 {{ if $mounts_elasticsearch.volumeMounts }}{{ toYaml $mounts_elasticsearch.volumeMounts | indent 12 }}{{ end }}
       volumes:
-        - name: pod-etc-apache
-          emptyDir: {}
         - name: elasticsearch-config
           emptyDir: {}
         - name: elasticsearch-logs

kibana/templates/deployment.yaml

@@ -122,8 +122,6 @@ spec:
       volumes:
         - name: pod-etc-kibana
           emptyDir: {}
-        - name: pod-etc-apache
-          emptyDir: {}
         - name: kibana-bin
           configMap:
             name: kibana-bin

nagios/templates/deployment.yaml

@@ -207,8 +207,6 @@ spec:
           secret:
             secretName: nagios-etc
             defaultMode: 0444
-        - name: pod-etc-apache
-          emptyDir: {}
         - name: nagios-bin
           configMap:
             name: nagios-bin

prometheus/templates/statefulset.yaml

@@ -184,8 +184,6 @@ spec:
               mountPath: /var/lib/prometheus/data
 {{ if $mounts_prometheus.volumeMounts }}{{ toYaml $mounts_prometheus.volumeMounts | indent 12 }}{{ end }}
       volumes:
-        - name: pod-etc-apache
-          emptyDir: {}
         - name: etcprometheus
           emptyDir: {}
         - name: rulesprometheus