KAZOO-1622: add generic error adder
KAZOO-1622: publish notification message
KAZOO-1620: start to revamp port request notification
KAZOO-1620: formatting and remove solo catch
KAZOO-1620: cancel current shard (in case it gets stuck)
KAZOO-1620: change timeout to 30s instead of infinity (was causing stuck requests)
KAZOO-1622: only delete a port request in waiting/rejected
KAZOO-1622: update spec
KAZOO-1620: updated curl commands with POST/DELETE
KAZOO-1622: use wh_json:is_true/2
KAZOO-1622: clean up POST/DELETE handling
KAZOO-1622: new template