Add keycloak role

keycloak/defaults/main.yml

+---
+
+keycloak_version: "15.0.2"
+keycloak_db:
+  type: h2
+
+# keycloak_db:
+#   type: postgres
+#   user: keycloak
+#   password: hunter2
+#   host: db.example.org
+#   name: keycloak
+
+keycloak_manage_local_postgres: true