KAZOO-3140: Return 402 for limits api
KAZOO-3140: Create v1/v2 apis for cb_limits
KAZOO-3140: Better log lines
KAZOO-3140: cleanup formatting, specs
KAZOO-3140: add spec, refactor case into function clauses
Merge pull request #642 from 2600hz/KAZOO-3140

KAZOO-3140: Return 402 for limits api