added rt[12] to router name sanity test

test/test_junos_devices_query.py

@@ -48,4 +48,4 @@ def test_router_hostname_derivation(mocked_redis):
     hostnames = list(data.derive_router_hostnames(config))
     assert hostnames  # test data is non-empty
     for h in hostnames:
-        assert re.match(r'^(mx[12]|qfx|srx[12])\..+\.geant\.net$', h)
+        assert re.match(r'^(rt[12]|mx[12]|qfx|srx[12])\..+\.geant\.net$', h)