Fix random assignment of transports to mock resources (#902)

Signed-off-by: Jonathan Thorpe <jthorpe@nvidia.com>

Author: jonathan-r-thorpe

nmostesting/suites/BCP0070302Test.py

@@ -194,7 +194,7 @@ def _select_test_mxl_senders(self):
             and any(self._is_compatible(sender, receiver) for receiver in connectable_mxl_receivers)
         ]
 
-        example_count = min(CONFIG.MAX_TEST_ITERATIONS or TEST_EXAMPLE_COUNT, len(testable_senders))
+        example_count = min(TEST_EXAMPLE_COUNT, len(testable_senders))
         if example_count == 0:
             return []