Revert additional profile, add global Mock for EntityService<DummyEntity>

Two key changes:

  1. Add a factory method to create the EntityService with the
     DummyEntity, so that all other test cases can initialize
     this Bean.  This solves the IllegalStateException reported
     in this ticket.
  2. Use @Autowire instead of @MockBean to use the new factory
     method.  That resolves the known issue that the caching test
     case does not work because of different RoomRepositories being
     created for the PermissionEvaluatorAdvice and the EntityService.

This makes all tests runnable again.  My current theory is that due to
the fact that we have at least two EntityServices (one created by
the DefaultEntityServiceImplTest, and now one by this test).  The
@MockBean annotation could be throwing out the previous EntityService,
since according to documentation, it replaces existing Beans with the
same type.  This could lead to a situation where, initially, the
PermissionEvaluatorAdvice and the DefaultEntityService share the same
RoomRepository.  But after the @MockBean replacement occurs, the
EntityService is recreated with a different RoomRepository, while the
Advice keeps its initial RoomRepository, leading to testing failures
in the testCaching test case.