Introducing Service Cluster A, hosting mathoid

Service Cluster A, aka sca1XXX will hold various services, the first of
which will be mathoid.
gwicke as the point person for deploy/debug

Bug: 69990
Change-Id: Idb610901b17bf8a4698dff5769623591fcad01b7
Merge "Introducing Service Cluster A, hosting mathoid" into production