proxy-header enhancement

[hwo-wd]

Deprecated proxy setting will only be emitted in keycloak.conf if keycloak_quarkus_proxy_headers is not set.

Fix #226

[guidograzioli]

LGTM

[guidograzioli]

There is another earlier problem: keycloak_quarkus_proxy_headers (https://github.com/ansible-middleware/keycloak/blob/main/roles/keycloak_quarkus/meta/argument_specs.yml#L329) is defined as default '', but the default is missing from defaults/main.yml, making it essentially a variable.

Can you take care of that here? (adding the "" default (preferred), or otherwise dropping it from arg_specs, and handling the undefined case)

[guidograzioli]

I do not really understand why the idempotency issue happens here (and not in previous builds); I think we have to drop the changed_when: true from here (which i added about a week ago to have orange logs instead of red, and to silence the linter complaining about ignore_errors...)

[guidograzioli]

I propose, for the sake of idempotency in tests, to change this to:
changed_when: keycloak_quarkus_deprecation_warnings
keycloak_quarkus_deprecation_warnings is default true, but we set it to false in all molecule tests

wdyt?

[hwo-wd]

Ok, so now I know that I know nothing; no fuck*** clue why it complains here https://github.com/world-direct/ansible-keycloak/blob/62cbaa35966f7edfeeeb4f76497a4b87de840f7e/roles/keycloak_quarkus/tasks/deprecations.yml#L46 but here it is fine: https://github.com/world-direct/ansible-keycloak/blob/62cbaa35966f7edfeeeb4f76497a4b87de840f7e/roles/keycloak_quarkus/tasks/deprecations.yml#L13

and I've tried plenty...

anyway, I ended up what I should have done from the beginning: following your advice, the new param is called keycloak_quarkus_show_deprecation_warnings, so let's be done with this PR