A1 2.0.0:

A1 2.0.0:

    * Implements new logic around when instances are deleted. See flowcharts in docs/. Basically timeouts now trigger to actually delete instances from a1s database, and these timeouts are configurable.
    * Eliminates the barrier to deleting an instance when no xapp evdr replied (via timeouts)
    * Add two new ENV variables that control timeouts
    * Make unit tests more modular so new workflows can be tested easily
    * Fixes the API for ../status to return a richer structure. This is an (albeit tiny) API change.
    * Clean up unused items in the integration tests helm chart
    * Removed "RMR_RCV_RETRY_INTERVAL" leftovers since this isn't used anymore
    * Uses the standard RIC logging library
    * Switch the backend routing scheme to using subscription id with constant message types, per request.
    * Given the above, policy type ids can be any valid 32bit greater than 0
    * Decouple the API between northbound and A1 from A1 with xapps. This is now two seperate OpenAPI files
    * Update example for AC Xapp
    * Updgrade rmr and rmr-python to utilize new features; lots of cleanups because of that

Change-Id: Ie7812607244cbcc484fe14c60fe27371e7e65082
Signed-off-by: Tommy Carpenter <tc677g@att.com>