Drop only private key in ns_ssl_services_setup:format_status.
Drop only private key in ns_ssl_services_setup:format_status.

Change-Id: Ie7a4a4f304506612232ba81bebfd002010a36704
Reviewed-on: http://review.couchbase.org/57088
Tested-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>
Reviewed-by: Poonam D <6855f09986fe28ed7e8cdd9d60db878d898703d5@couchbase.com>

ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,ceejatec/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server,membase/ns_server,ceejatec/ns_server,membase/ns_server