KAZOO-1: dialyzer updates to specs for internal ecallmgr consistency
KAZOO-1: whistle dialyzer specs, tickies, formatting
KAZOO-1: whistle_amqp dialyzer specs, tickies, formatting
KAZOO-1: dialyzer specs, tickies, formatting
KAZOO-1: dialyzer spec updates, tickies, formatting
KAZOO-1: update spec for amqp worker