Add open egress rules to multiple infra charts

This change adds egress rules to the following charts:
- ingress
- memcache
- libvirt
- rabbitmq

These rules will be tightend down in future changes

Change-Id: I6f297d50ca4c06234c7c79986a12cccf3beb5efb

ingress/values.yaml

@@ -246,6 +246,8 @@ network_policy:
   ingress:
     ingress:
       - {}
+    egress:
+      - {}
 
 conf:
   controller:

libvirt/values.yaml

@@ -62,6 +62,8 @@ network_policy:
   libvirt:
     ingress:
       - {}
+    egress:
+      - {}
 
 ceph_client:
   configmap: ceph-etc

memcached/values.yaml

@@ -103,6 +103,8 @@ network_policy:
   memcached:
     ingress:
       - {}
+    egress:
+      - {}
 
 monitoring:
   prometheus:

rabbitmq/values.yaml

@@ -322,6 +322,8 @@ network_policy:
   rabbitmq:
     ingress:
       - {}
+    egress:
+      - {}
 
 volume:
   use_local_path: