A1 v2.1.0

A1 v2.1.0

* Represents a resillent version of 2.0.0 that uses Redis for persistence
* Now relies on SDL and dbaas; SDL is the python interface library to dbaas
* Adds a 503 http code to nearly all http methods, as A1 now depends on an upstream system
* Integration tests have a copy of a dbaas helm chart, however the goal is to simplify that deployment per RIC-45
* Unit tests have a mockup of SDL, however again the goal is to simplify as SDL grows per RIC-44

Change-Id: I703a60788c98dc81218dbe5275fb3899635ec26d
Signed-off-by: Tommy Carpenter <tc677g@att.com>