CBLT-159:  mobile_functional_tests now have default build number per edition

Change-Id: I83423f35f40c95c334d66578b1e158777ea7aed5
Reviewed-on: http://review.couchbase.org/37911
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>