dpdk: pylint return type annotation

Author: mcgov

lisa/microsoft/testsuites/dpdk/dpdksuite.py

@@ -494,7 +494,7 @@ def run_testpmd_hotplug_recv_test(
         log: Logger,
         variables: Dict[str, Any],
         pmd: Pmd = Pmd.FAILSAFE,
-    ):
+    ) -> None:
         test_kits = init_nodes_concurrent(
             environment,
             log,
@@ -529,7 +529,7 @@ def run_testpmd_hotplug_send_test(
         log: Logger,
         variables: Dict[str, Any],
         pmd: Pmd = Pmd.FAILSAFE,
-    ):
+    ) -> None:
         try:
             test_kit = initialize_node_resources(
                 node, log, variables, pmd, HugePageSize.HUGE_2MB