[VOL-4041] Migration to single ONOS SSH connection

Change-Id: I91f5f3c96585097486bc862118d8753bf4b30cba
diff --git a/tests/functional/Voltha_MultiOLT_Tests.robot b/tests/functional/Voltha_MultiOLT_Tests.robot
old mode 100644
new mode 100755
index c55a8cc..bfff1d3
--- a/tests/functional/Voltha_MultiOLT_Tests.robot
+++ b/tests/functional/Voltha_MultiOLT_Tests.robot
@@ -17,7 +17,7 @@
 Suite Setup       Setup Suite
 Test Setup        Setup
 Test Teardown     Teardown
-#Suite Teardown    Teardown Suite
+Suite Teardown    Teardown Suite
 Library           Collections
 Library           String
 Library           OperatingSystem
@@ -182,3 +182,7 @@
     # Performing Sanity Test to make sure subscribers are all AUTH+DHCP and pingable
     Run Keyword If    ${has_dataplane}    Clean Up Linux
     Wait Until Keyword Succeeds    ${timeout}    2s    Perform Sanity Test
+
+Teardown Suite
+    [Documentation]    Clean up ONOS SSH connections
+    Close All ONOS SSH Connections