Adapt configuration of Keycloak remote app

Since TU Wien's Invenio-Keycloak is moving to Invenio-OAuthClient.contrib,
the required configuration has to be adapted

invenio_config_tuw/config.py

@@ -158,18 +158,17 @@ RECAPTCHA_PRIVATE_KEY = None
 # Invenio-Keycloak
 # ================
 
-from invenio_keycloak.config import KeycloakSettingsHelper
+from invenio_oauthclient.contrib.keycloak import KeycloakSettingsHelper
 
 helper = KeycloakSettingsHelper(base_url="https://s194.dl.hpc.tuwien.ac.at:8443", realm="invenio")
 
-KEYCLOAK_REMOTE_APP = helper.remote_app()
-KEYCLOAK_REALM_URL = helper.realm_url
-KEYCLOAK_USER_INFO_URL = helper.user_info_url
-KEYCLOAK_AUD = "invenio"
-KEYCLOAK_VERIFY_AUD = True
+OAUTHCLIENT_KEYCLOAK_REALM_URL = helper.realm_url
+OAUTHCLIENT_KEYCLOAK_USER_INFO_URL = helper.user_info_url
+OAUTHCLIENT_KEYCLOAK_AUD = "invenio"
+OAUTHCLIENT_KEYCLOAK_VERIFY_AUD = True
 
 OAUTHCLIENT_REMOTE_APPS = {
-	"keycloak": KEYCLOAK_REMOTE_APP,
+	"keycloak": helper.remote_app(),
 }
 
 KEYCLOAK_APP_CREDENTIALS = {