Maven build test correction

[DuckflipXYZ]

Hello !

Core fixes are :

• The creation of a RabbitTemplate configuration. It should be auto-configured by Spring, but for a mysterious reason it's not, so instead we configure it manually with a @config @componentscan class.
• The addition of a @lazy tag, that breaks a circular dependency which is (it starts with Bids in the cases that I experimented, but it can happens in other way I guess ...):
  --> BidsAPIController --> BIDSServiceImpl --> ExaminationServiceImpl --> StudyInstanceUIDHandler -> ExaminationServiceImpl --> ...

Rest of modified code was not used anymore, so removing them save resources. Ah, and my IDE says that @MockBean is deprecated and from what I see, @MockitoBean is the standard replacement.

[michaelkain]

Hi @DuckflipXYZ, thank you for this PR.
To be honest, I do not know, what the background and the goal is?
Please explain in the weekly. Thank you, Michael

[DuckflipXYZ]

The point is to resolve issues which can occur at maven build step. For example, merge this to the PR #2653 should correct the maven build check made on github. By talking with PH, we agreed that those issues are experimented kinda often, so a global fix seems usefull