tests: only check IU configs if IU is enabled

Fix vty tests that are failing since libosmocore change
Ic225232fbfca49ba868427eaf898e1f6e34e1ca8. If OsmoMSC is built without
IU support, it fails with "cs7-instance-iu" in the config.

Change-Id: Ie56da9167badfd2399b566af91a345103f46c2a1

osmoappdesc.py

@@ -14,13 +14,16 @@
 # You should have received a copy of the GNU General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>
 
+import os
+
 app_configs = {
-    "msc": ["doc/examples/osmo-msc/osmo-msc.cfg",
-            "doc/examples/osmo-msc/osmo-msc_custom-sccp.cfg",
-            "doc/examples/osmo-msc/osmo-msc_multi-cs7.cfg",
-	   ],
+    "msc": ["doc/examples/osmo-msc/osmo-msc.cfg"],
 }
 
+if os.environ["IU"] == "1":
+    app_configs["msc"] += ["doc/examples/osmo-msc/osmo-msc_custom-sccp.cfg",
+                           "doc/examples/osmo-msc/osmo-msc_multi-cs7.cfg"]
+
 apps = [(4254, "src/osmo-msc/osmo-msc", "OsmoMSC", "msc"),
         ]
 

tests/Makefile.am

@@ -59,8 +59,13 @@ python-tests: $(BUILT_SOURCES)
 endif
 
 vty-python-test: $(BUILT_SOURCES)
-	osmotestvty.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
-	osmotestconfig.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
+if BUILD_IU
+	IU=1 osmotestvty.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
+	IU=1 osmotestconfig.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
+else
+	IU=0 osmotestvty.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
+	IU=0 osmotestconfig.py -p $(abs_top_srcdir) -w $(abs_top_builddir) -v
+endif
 	$(srcdir)/vty_test_runner.py -w $(abs_top_builddir) -v
 	rm -f $(top_builddir)/sms.db