[VOL-2472] - Implement the keyword to enable/disable web power-switch outlet

- Support the custom debug arguments for system-testing

Change-Id: Ief671dcbf8951edd954c6611be0fd441d2ffc570
diff --git a/Makefile b/Makefile
index 438f7f4..eb72d07 100644
--- a/Makefile
+++ b/Makefile
@@ -83,7 +83,7 @@
 bbsim-scale-kind: voltha-test
 
 system-scale-test: ROBOT_FILE := Voltha_PODTests.robot
-system-scale-test: ROBOT_MISC_ARGS += -X -i sanity
+system-scale-test: ROBOT_MISC_ARGS += -X -i sanity $(ROBOT_DEBUG_LOG_OPT)
 system-scale-test: ROBOT_CONFIG_FILE := $(ROBOT_SANITY_SINGLE_PON_FILE)
 system-scale-test: k8s-system-test