MB-12251: Make all test parameters mandatory

Change-Id: I34f2e99ff86ca3cf68efc269845a124711e1ac57
Reviewed-on: http://review.couchbase.org/43855
Tested-by: Volker Mische <volker.mische@gmail.com>
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Ketaki Gangal <ketakigangal@gmail.com>