MB-7250: use plabee/MB-7250 for couchdbx-app, not couchdb

Change-Id: I505576c4f80336727860d2102b8af0f557ae0906
Reviewed-on: http://review.couchbase.org/41068
Reviewed-by: Philip Labee <philip@couchbase.com>
Tested-by: Philip Labee <philip@couchbase.com>