kunit: fix no-name tests

Apparently there are no-name tests in kunit.

Signed-off-by: Jakub Kicinski <[email protected]>

contest/remote/lib/fetcher.py

@@ -158,6 +158,8 @@ def run(self):
 
 
 def namify(what):
+    if not what:
+        return "no-name"
     name = re.sub(r'[^0-9a-zA-Z]+', '-', what)
     if name[-1] == '-':
         name = name[:-1]