ms_{srs,amarisoft}: Support selecting tgz based on run_node's run label

Change-Id: I2c4cab02fa34c7acc7e57c3fec5a42c26d2a9208
diff --git a/src/osmo_gsm_tester/obj/ms_srs.py b/src/osmo_gsm_tester/obj/ms_srs.py
index 1efa7c1..f53f461 100644
--- a/src/osmo_gsm_tester/obj/ms_srs.py
+++ b/src/osmo_gsm_tester/obj/ms_srs.py
@@ -198,7 +198,7 @@
         self.process.launch()
 
     def configure(self):
-        self.inst = util.Dir(os.path.abspath(self.testenv.suite().trial().get_inst('srslte')))
+        self.inst = util.Dir(os.path.abspath(self.testenv.suite().trial().get_inst('srslte', self._run_node.run_label())))
         if not os.path.isdir(self.inst.child('lib')):
             raise log.Error('No lib/ in', self.inst)
         if not self.inst.isfile('bin', srsUE.BINFILE):