Add Control Loop Coordination policy.

Refactor code to support multiple pip engines.
Add pip engine for outcome.
Modify LegacyGuardTranslator to use coordination translator's
convertPolicy function when processing coordination guard.
This version of convertPolicy intentionally uses string
replacement on template-like xacml coordination guard to
enable future support for API-based creation of new coordination
guard types.
Bug fixes and code cleanup.

* Unused imports, sonar problems.
* Consolidation of getAttribute method
* Only use TypedQuery for Pips

Issue-ID: POLICY-1471
Change-Id: I4e9365b7f23bee96cf438dad44feda97c65f6ecc
Signed-off-by: Joshua Reich <jreich@research.att.com>
Signed-off-by: Pamela Dragosh <pdragosh@research.att.com>