Use IPv6 for esams -> eqiad communication

Change-Id: I39eef7b7c878b4455a77b3042a9171b0de93b50d
Merge "Use IPv6 for esams -> eqiad communication" into production
Add Nagios group for esams mobile caches

Change-Id: Ibd62fc0f31cfec008c3d23f1ec0ef961d312c6ae
Merge "Add Nagios group for esams mobile caches" into production