Add mr1-esams.wikimedia.org

The other (OOB) management routers are contacted by rancid
on their management interfaces. I'm using the (public) loopback
address for now, as the management interface isn't even setup yet.

Change-Id: I2a8aab86cf7166503656eed92b11c7c7e90e2ab0
Merge "Add mr1-esams.wikimedia.org" into production