Fail to perform firmware update

Changes:
   - Verify Code Update Fails When Kernel Panic Occur

Tested:
   - Ran successfully
     redfish/update_service/
     test_redfish_bmc_code_update.robot

Change-Id: Iae19c360248739ca94151e80e6904d8f1bec984e
Signed-off-by: Sushil Singh <susilsi7@in.ibm.com>
diff --git a/lib/common_utils.robot b/lib/common_utils.robot
index 3c4d06c..26300da 100755
--- a/lib/common_utils.robot
+++ b/lib/common_utils.robot
@@ -999,7 +999,7 @@
     [Documentation]  Create kernel panic to reset BMC.
 
     ${kernel_panic_cmd_file}=  Set Variable  /bin/sh -c "echo c > /proc/sysrq-trigger"
-    ${status}=  Run Keyword And Return Status  BMC Execute Command  ${kernel_panic_cmd_file}  time_out=120
+    ${status}=  Run Keyword And Return Status  BMC Execute Command  ${kernel_panic_cmd_file}  time_out=20
 
     [Return]  ${status}