Refactors the logic for initializing the credentials database connection
to simplify adding a second jpa entity manager. There are now no hard-coded
references to the jpa xml definition  between tiers.  The workman AppDriver now uses
the basePackages constructor for it's spring context so that any mill configurations
under org.duracloud.mill are loaded automatically. Also this new setup allows
one to easily specify an alternate path the management console properties using -Dmc.config.path
commandline params.
Updates code to work with duracloud 3.2.0-SNAPSHOT
Removes all code and tools dependent on DynamoDB
Removes all dynamodb related code from the baseline.
Completes https://jira.duraspace.org/browse/DPS-84: Create jpa implementation for duracloud auditor interface.
fixes broken BitIntegrityCheckTaskProcessorTest
Merge branch 'feature/dps-84-jpa-audit-module' into develop