Move OidcTenantConfig out of the runtime package

[sberyozkin]

Fixes #8347

I can update 1.4.0.Final release notes and also sent the note to the forum once this PR is merged. CC @gsmet

[sberyozkin]

AmazonLambdaSimpleTestCase fails in one of the CIs.
I'll give it another rebase

[pedroigor]

We should probably have a specific object to build this configuration when multi-tenancy is being used. It would help to improve encapsulation and remove those getters/setters that are kind of redundant now.

I'm approving because I think you mentioned we are going to handle this in the future. But the way it is now users can set config properties in different ways when using multi-tenancy.

[sberyozkin]

@pedroigor Hi, you had an idea awhile back that we can introduce a builder API, I might give it a go later.

[sberyozkin]

@pedroigor @gsmet I keep getting a resteasy deployment test failure, Security2 tests pass:
https://github.com/quarkusio/quarkus/pull/8596/checks?check_run_id=592986982

I'll rebase again just to try to get a total green, but will merge, unless there will be more review comments if the same reasteasy test fails, as it has to make it into 1.4.0.Final if it to make it at all :-)

[sberyozkin]

The same resteasy deployment failure, so I'll just go ahead or else it won't make it at all.

[sberyozkin]

@gsmet Can you explain why it is not backported ? I've updated the 1.4 migration guide thinking it was already backported (or will be shortly)

[sberyozkin]

@gsmet OK, got it. Sorry I missed that the backport was already done, could've checked