Changes to use monasca instead of mon for the API

Rename databag values to monasca_api

Rename credentials to credentials from mon_credentials

Cookbook is now named monasca_api instead of mon_api

Change smoke test to look for monasca-api process

Change-Id: Ic0089a4ba6c23e0b6fc343ca0f83c97a100ed74b
Merge "Changes to use monasca instead of mon for the API"