Move validateOffload plugin full results to DEBUG level

Currently a lot of unneeded packet statistics are
reported at the INFO level. Moving to debug, but
keeping rx/tx_packet_start and rx/tx_packet_end in
INFO level, along with success boolean and message.

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

Author: vkunaparaju

pluginValidateOffload.py

@@ -591,4 +591,10 @@ def _aggregate_output_log_success(
             else:
                 logger.info("The server VF representor ovn-k8s-mp0_0 does not exist")
 
-        logger.info(f"validateOffload results on {self.perf_pod_name}: {result.result}")
+        msg_suffix = f", {result.msg}" if result.msg is not None else ""
+        logger.info(
+            f"validateOffload results on {self.perf_pod_name}: "
+            f"success={result.success}{msg_suffix}"
+        )
+
+        logger.debug(f"Full results: {result.result}")