Collecting logs during suite teardown for better debugging

Change-Id: Ibf688f5da4d3b7f023866913163a84fec7ffd940
diff --git a/libraries/utils.robot b/libraries/utils.robot
index adcd9b2..793662d 100755
--- a/libraries/utils.robot
+++ b/libraries/utils.robot
@@ -718,6 +718,7 @@
 Teardown Suite
     [Documentation]    Clean up device if desired
     Run Keyword If    ${teardown_device}    Delete All Devices and Verify
+    Run Keyword And Continue On Failure    Collect Logs
     Close All ONOS SSH Connections
 
 Delete Device and Verify