KAZOO-2083: cf_endpoints do not try to build a fwd enpoint if number is empty
KAZOO-2083: Change exact match to wh_util:is_empty
KAZOO-2083: Remove io:format
Merge pull request #227 from 2600hz/KAZOO-2083

KAZOO-2083: cf_endpoints do not try to build a fwd enpoint if number is ...