MB-15761 add parameter to generate_cert to use sha1 in cert
MB-15761 add parameter to generate_cert to use sha1 in cert

Change-Id: I5c553d1a6e9a87bd3a640bf7f500f051240efb1e
Reviewed-on: http://review.couchbase.org/53640
Tested-by: Artem Stemkovski <15a0730a27c69f62ab86f2b6c639fca202166c02@couchbase.com>
Reviewed-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>

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