[VOL-4041] Migration to single ONOS SSH connection

Change-Id: I91f5f3c96585097486bc862118d8753bf4b30cba
diff --git a/tests/functional/Voltha_ErrorScenarios.robot b/tests/functional/Voltha_ErrorScenarios.robot
old mode 100644
new mode 100755
index ec1a9a0..d41a7d6
--- a/tests/functional/Voltha_ErrorScenarios.robot
+++ b/tests/functional/Voltha_ErrorScenarios.robot
@@ -326,3 +326,4 @@
     Run Keyword If    ${has_dataplane}    Clean Up Linux
     #Restore all ONUs
 #    Run Keyword If    ${has_dataplane}    RestoreONUs    ${num_onus}
+    Close All ONOS SSH Connections