Catch pre_provision errors and clean up

Update to cleanup resources during pre_provisioning
if an error occurs. Previously, if an error occured
during pre_provisioning then all the resources
would hang.

Signed-off-by: Venkat Kunaparaju <vkunaparaju@nvidia.com>

Author: vkunaparaju

trafficFlowTests.py

@@ -406,10 +406,11 @@ def test_run(
         ns_created = self._configure_namespace(cfg_descr)
         self._cleanup_stale_udn(cfg_descr)
         self._cleanup_previous_testspace(cfg_descr, force_cleanup=True)
-        if test.pre_provision:
-            self._provision_all_resources(cfg_descr)
 
         try:
+            if test.pre_provision:
+                self._provision_all_resources(cfg_descr)
+
             logger.info(f"Running test {test.name} for {test.duration} seconds")
             tft_results = self._run_test_cases(cfg_descr)