Changed Delete All Sessions to Close All Connections.

Change-Id: I71bfc3e61f0636980283090b0f183e1d7721bd06
Signed-off-by: Michael Walsh <micwalsh@us.ibm.com>
diff --git a/lib/obmc_boot_test.py b/lib/obmc_boot_test.py
index d5b1081..f407569 100755
--- a/lib/obmc_boot_test.py
+++ b/lib/obmc_boot_test.py
@@ -855,7 +855,7 @@
         BuiltIn().fail(error_message)
 
     # This should help prevent ConnectionErrors.
-    grk.run_key_u("Delete All Sessions")
+    grk.run_key_u("Close All Connections")
 
     return True