[VOL-4395] (Part of) Added support to enable/disable per-test voltha logging in bbsim based periodic job

Change-Id: I1fafbe7812d45ff38d0b8bcaee11a41a76b8994d
diff --git a/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot b/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
index 4adfcc6..e746223 100755
--- a/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
+++ b/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
@@ -60,6 +60,10 @@
 ${upper_margin_pct}      120      # Allow 20% under the limit
 ${pon_max_bw_capacity_xgs}=    9700000      # Mbps, for xgs-pon OLT, when FEC Disabled
 
+# logging flag to enable Voltha Components Logging, can be passed via the command line too
+# example: -v logging:False
+${logging}    True
+
 *** Test Cases ***
 Test that the BW is limited to Limiting Bandwidth
     [Documentation]    Verify support for Tcont type 1.