Don't parse NMV config if cccp is disabled

Change-Id: I14532f43835e87f6808ca20ee880537528f16d1f
Reviewed-on: http://review.couchbase.org/34997
Tested-by: Mark Nunberg <mnunberg@haskalah.org>
Reviewed-by: Subhashni Balakrishnan <b.subhashni@gmail.com>