Bump up timeout failure directive for keyword execution limit

Changes:
    - Increase timeout to 120 seconds to improve chances of success
      when looked at overall system performace vs test expectation.

Change-Id: Ie924245ed2d6ecaedff638fd9b1f19f6682a25e7
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/utils.robot b/lib/utils.robot
index 39ff393..264b165 100755
--- a/lib/utils.robot
+++ b/lib/utils.robot
@@ -871,7 +871,7 @@
 
 Redfish Get States
     [Documentation]  Return all the BMC and host states in dictionary.
-    [Timeout]  30 Seconds
+    [Timeout]  120 Seconds
 
     # Refer: openbmc/docs/designs/boot-progress.md