Changing the node in testbed_sanity_nodec21_noMultiIntf_github_havana.py and testbed_sanity_nodec21_noMultiIntf_icehouse.py

Change-Id: If08360724cddf8548b80f58437eced7b24c3adb2
Merge "Changing the node in testbed_sanity_nodec21_noMultiIntf_github_havana.py and testbed_sanity_nodec21_noMultiIntf_icehouse.py"