Keycloak idp well known url support (#10527)
* first commit
* add and fixe test
* add example
* fragment and sanity
* sanity
* sanity
* Update plugins/modules/keycloak_identity_provider.py
* Update changelogs/fragments/10527-keycloak-idp-well-known-url-support.yml
---------
(cherry picked from commit 7ffeaaa16d)
Co-authored-by: desand01 <desrosiers.a@hotmail.com>
Co-authored-by: Andre Desrosiers <andre.desrosiers@ssss.gouv.qc.ca>
Co-authored-by: Felix Fontein <felix@fontein.de>