updates to bbsim tests

Change-Id: I2ef8999d35c877db02cba708a9ef7957d58ffd48
diff --git a/src/test/cord-api/Tests/BBSim/BBSIMScale.robot b/src/test/cord-api/Tests/BBSim/BBSIMScale.robot
index bb8a540..4fda028 100644
--- a/src/test/cord-api/Tests/BBSim/BBSIMScale.robot
+++ b/src/test/cord-api/Tests/BBSim/BBSIMScale.robot
@@ -89,7 +89,7 @@
 
 *** Keywords ***
 Setup
-    ${server_ip}=    Get Environment Variable    SERVER_IP    localhost
+    ${server_ip}=    Get Environment Variable    SERVER_IP    127.0.0.1
     ${port}=    Get Environment Variable    SERVER_PORT    30001
     ${auth} =    Create List    ${XOS_USER}    ${XOS_PASSWD}
     ${voltha_auth}=    Create List    voltha    admin