CBQE-1327: update installation id for 2.1

Change-Id: I3cc77a0dfa5f0b1b3a884f2f169e4364549b44ff
Reviewed-on: http://review.couchbase.org/26715
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>