Fix Keycloak authentication flow configuration issues (#9987)

* Add delete_authentication_config method and integrate it into create_or_update_executions

* typo

* Sanity

* Add integration tests for keycloak_authentication module with README, tasks, and variables

* Add copyright and license information to access_token.yml

* Sanity

* Refactor Keycloak integration tests: streamline README, update access token task, and enhance variable management

* Maj changelogs fragments

---------

Co-authored-by: Andre Desrosiers <andre.desrosiers@ssss.gouv.qc.ca>

plugins/module_utils/identity/keycloak/keycloak.py

@@ -2224,6 +2224,23 @@ class KeycloakAPI(object):
         except Exception as e:
             self.fail_request(e, msg="Unable to add authenticationConfig %s: %s" % (executionId, str(e)))
 
+    def delete_authentication_config(self, configId, realm='master'):
+        """ Delete authenticator config
+
+        :param configId: id of authentication config
+        :param realm: realm of authentication config to be deleted
+        """
+        try:
+            # Send a DELETE request to remove the specified authentication config from the Keycloak server.
+            self._request(
+                URL_AUTHENTICATION_CONFIG.format(
+                    url=self.baseurl,
+                    realm=realm,
+                    id=configId),
+                method='DELETE')
+        except Exception as e:
+            self.fail_request(e, msg="Unable to delete authentication config %s: %s" % (configId, str(e)))
+
     def create_subflow(self, subflowName, flowAlias, realm='master', flowType='basic-flow'):
         """ Create new sublow on the flow