do not update ms-testing-suite when -n is passed

tester.py

@@ -147,7 +147,7 @@ class Tester:
         email = "-e" in args
         email_if_fail = "-f" in args
         basic_only = "-b" in args
-        tests = self.discover_tests(basic_only, msuser)
+        tests = self.discover_tests(basic_only, msuser, args)
         if not tests:
             sys.exit(1)
 
@@ -194,7 +194,7 @@ class Tester:
             criticality = "not specified"
         return criticality, description
 
-    def discover_tests(self, basic_only=False, msuser=None, *args):
+    def discover_tests(self, basic_only=False, msuser=None, args=args):
         ignored_tests = utils.get_conf("TESTER_IGNORED_TESTS", "").split(",")
         ignored_tests.append("__init__.py")
         # Get standard tests