Add Timeout directive to get state call

This is to prevent the GET call hang which we noticed randomly.

Change-Id: Ibc1564eabd1d6ded12e6c60005b11eb19c49ddf6
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/utils.robot b/lib/utils.robot
index 6147319..e90ccbf 100755
--- a/lib/utils.robot
+++ b/lib/utils.robot
@@ -871,6 +871,7 @@
 
 Redfish Get States
     [Documentation]  Return all the BMC and host states in dictionary.
+    [Timeout]  30 Seconds
 
     # Refer: openbmc/docs/designs/boot-progress.md