all-tests.opts: add osmo-mgw, osmo-hlr external tests

Change-Id: I7142ab76ffa7f1eac9d81d1f2fb3bf48fa756d36
diff --git a/all-tests.opts b/all-tests.opts
index 72557d3..af131e7 100644
--- a/all-tests.opts
+++ b/all-tests.opts
@@ -1,3 +1,5 @@
 osmo-msc --enable-external-tests --enable-vty-tests
 osmo-bsc --enable-external-tests --enable-vty-tests
 osmo-sgsn --enable-external-tests --enable-vty-tests
+osmo-mgw --enable-external-tests --enable-vty-tests
+osmo-hlr --enable-external-tests