use osmo_rat_type from libosmocore

Replace locally defined enum ran_type with libosmocore's new enum
osmo_rat_type, and value_string ran_type_names with osmo_rat_type_names.

The string representations change, which has cosmetic effects on the test suite
expectations.

Depends: I659687aef7a4d67ca372a39fef31dee07aed7631 (libosmocore)
Change-Id: I2c78c265dc99df581e1b00e563d6912c7ffdb36b
diff --git a/tests/msc_vlr/msc_vlr_test_call.c b/tests/msc_vlr/msc_vlr_test_call.c
index b1ff2c0..b5f6b6c 100644
--- a/tests/msc_vlr/msc_vlr_test_call.c
+++ b/tests/msc_vlr/msc_vlr_test_call.c
@@ -45,7 +45,7 @@
 
 	net->authentication_required = true;
 	net->vlr->cfg.assign_tmsi = true;
-	rx_from_ran = RAN_UTRAN_IU;
+	rx_from_ran = OSMO_RAT_UTRAN_IU;
 
 	btw("Location Update request causes a GSUP Send Auth Info request to HLR");
 	lu_result_sent = RES_NONE;