MB-9096 remove new_style suffixes and prefixes from janitor_agent

Change-Id: Ia95b9730d3e7bd426565c525f197fe15a740d6de
Reviewed-on: http://review.couchbase.org/29399
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-9096 renamed ns_vbm_new_sup to ns_vbm_sup

Change-Id: I29b389fec6d4dc4b9bde8be110bab1f6e39669c2
Reviewed-on: http://review.couchbase.org/29400
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>