feat(ops/keycloak): Check in initial Keycloak configuration

This is still missing most of the client configuration etc., in part
due to bugs in the provider which are preventing resource imports.

Change-Id: Ic224ffc001f8e1fe6dcd47b7d002580fdf7b0774
Reviewed-on: https://cl.tvl.fyi/c/depot/+/4628
Tested-by: BuildkiteCI
Autosubmit: tazjin <mail@tazj.in>
Reviewed-by: Profpatsch <mail@profpatsch.de>

bin/__dispatch.sh

@@ -65,6 +65,10 @@ case "${TARGET_TOOL}" in
     TARGET_TOOL="terraform"
     attr="ops.glesys.terraform"
     ;;
+  tf-keycloak)
+    TARGET_TOOL="terraform"
+    attr="ops.keycloak.terraform"
+    ;;
   *)
     echo "The tool '${TARGET_TOOL}' is currently not installed in this repository."
     exit 1