Collect ntp info and try to grab time from the internet.
Collect ntp info and try to grab time from the internet.

This way it's easier to understand if local time on a particular
server has drifted away.

Change-Id: I2e261c50387563b013d79e7360ad1523618562ee
Reviewed-on: http://review.couchbase.org/57340
Tested-by: Aliaksey Artamonau <3c875bcfb3adf2a65b2ae7686ca921e6c9433147@gmail.com>
Reviewed-by: Artem Stemkovski <15a0730a27c69f62ab86f2b6c639fca202166c02@couchbase.com>

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