Run onos-secure-ssh for ssh-based onos cli login

Change-Id: I073efa00b0e6c790f9b73c7da89c0595b1949555
diff --git a/TestON/tests/CHO/CHOtest/CHOtest.py b/TestON/tests/CHO/CHOtest/CHOtest.py
index 27104b8..411035d 100644
--- a/TestON/tests/CHO/CHOtest/CHOtest.py
+++ b/TestON/tests/CHO/CHOtest/CHOtest.py
@@ -144,6 +144,14 @@
                                      onfail="Test step FAIL" )
             statusResult = ( statusResult and onos_status )
 
+        main.step( "Set up ONOS secure SSH" )
+        secureSshResult = main.TRUE
+        for i in range( int( main.numCtrls ) ):
+            secureSshResult = secureSshResult and main.ONOSbench.onosSecureSSH( node=main.ONOSip[i] )
+        utilities.assert_equals( expect=main.TRUE, actual=secureSshResult,
+                                 onpass="Test step PASS",
+                                 onfail="Test step FAIL" )
+
         main.step( "Start ONOS CLI on all nodes" )
         cliResult = main.TRUE
         main.step(" Start ONOS cli using thread ")