MB-12416: avoid to check for master if upgrade from 3.0.0 -> 3.0.1

Change-Id: I457967cc0abfac1942c2f9e58e30b0a59eec3350
Reviewed-on: http://review.couchbase.org/42565
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>
Tested-by: Sangharsh Agarwal <sangharsh.agarwal@globallogic.com>