Added keyword Clean Up All Nodes to kill stale lxc processes in Suite Teardown

Change-Id: Iac5367cb5eb6158a1897ff05ff2fa1f77a6e3111
diff --git a/tests/functional/Voltha_AlarmTests.robot b/tests/functional/Voltha_AlarmTests.robot
index 8973593..4437135 100755
--- a/tests/functional/Voltha_AlarmTests.robot
+++ b/tests/functional/Voltha_AlarmTests.robot
@@ -381,6 +381,7 @@
     Run Keyword If    ${teardown_device}    Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}
     ...    device-remove ${of_id}
     Close All ONOS SSH Connections
+    Run Keyword If    ${has_dataplane}    Clean Up All Nodes
 
 # Onu Alarms
 
diff --git a/tests/functional/Voltha_ErrorScenarios.robot b/tests/functional/Voltha_ErrorScenarios.robot
index a9e53d6..7f51af7 100755
--- a/tests/functional/Voltha_ErrorScenarios.robot
+++ b/tests/functional/Voltha_ErrorScenarios.robot
@@ -332,3 +332,4 @@
     #Restore all ONUs
 #    Run Keyword If    ${has_dataplane}    RestoreONUs    ${num_onus}
     Close All ONOS SSH Connections
+    Run Keyword If    ${has_dataplane}    Clean Up All Nodes
diff --git a/tests/functional/Voltha_FailureScenarios.robot b/tests/functional/Voltha_FailureScenarios.robot
index e0e8eb7..add8f1b 100755
--- a/tests/functional/Voltha_FailureScenarios.robot
+++ b/tests/functional/Voltha_FailureScenarios.robot
@@ -805,3 +805,4 @@
 Teardown Suite
     [Documentation]    Clean up ONOS SSH connections
     Close All ONOS SSH Connections
+    Run Keyword If    ${has_dataplane}    Clean Up All Nodes
diff --git a/tests/functional/Voltha_MultiOLT_Tests.robot b/tests/functional/Voltha_MultiOLT_Tests.robot
index c92ba70..fbca7fe 100755
--- a/tests/functional/Voltha_MultiOLT_Tests.robot
+++ b/tests/functional/Voltha_MultiOLT_Tests.robot
@@ -191,3 +191,4 @@
 Teardown Suite
     [Documentation]    Clean up ONOS SSH connections
     Close All ONOS SSH Connections
+    Run Keyword If    ${has_dataplane}    Clean Up All Nodes
diff --git a/tests/functional/Voltha_ScaleFunctionalTests.robot b/tests/functional/Voltha_ScaleFunctionalTests.robot
index 58e6a8e..709336e 100755
--- a/tests/functional/Voltha_ScaleFunctionalTests.robot
+++ b/tests/functional/Voltha_ScaleFunctionalTests.robot
@@ -196,6 +196,7 @@
     Run Keyword If    ${teardown_device}    Execute ONOS CLI Command use single connection    ${ONOS_SSH_IP}    ${ONOS_SSH_PORT}
     ...    device-remove ${of_id}
     Close All ONOS SSH Connections
+    Run Keyword If    ${has_dataplane}    Clean Up All Nodes
 
 Clean Up Linux
     [Documentation]    Kill processes and clean up interfaces on src+dst servers
diff --git a/tests/tt-workflow/Voltha_TT_FailureScenarios.robot b/tests/tt-workflow/Voltha_TT_FailureScenarios.robot
index 70a76e4..52e26c0 100755
--- a/tests/tt-workflow/Voltha_TT_FailureScenarios.robot
+++ b/tests/tt-workflow/Voltha_TT_FailureScenarios.robot
@@ -481,12 +481,6 @@
     ${switch_type}=    Get Variable Value    ${web_power_switch.type}
     Run Keyword If  "${switch_type}"!=""    Set Global Variable    ${powerswitch_type}    ${switch_type}
 
-Teardown Suite
-    [Documentation]    Tear down steps for the suite
-    Run Keyword If    ${has_dataplane}    Clean Up Linux
-    Run Keyword If    ${teardown_device}    Delete All Devices and Verify
-    Close All ONOS SSH Connections
-
 Clear All Devices Then Create New Device
     [Documentation]    Remove any devices from VOLTHA and ONOS & then Create new devices
     # Remove all devices from voltha and onos
diff --git a/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot b/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
index 5123814..f455726 100755
--- a/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
+++ b/tests/tt-workflow/Voltha_TT_MultiTcontTests.robot
@@ -578,10 +578,3 @@
     Delete All Devices and Verify
     # Execute normal test Setup Keyword
     Setup
-
-
-Teardown Suite
-    [Documentation]    Tear down steps for the suite
-    Run Keyword If    ${has_dataplane}    Clean Up Linux
-    Run Keyword If    ${teardown_device}    Delete All Devices And Verify
-    Close All ONOS SSH Connections