Fan non-functional error log wait time

Resolves  openbmc/openbmc-test-automation#1293

Change-Id: I218067cc511f929d0b66891b45128af74eef5e11
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/systest/test_fans_os.robot b/systest/test_fans_os.robot
index ecf0b1d..8457fc6 100755
--- a/systest/test_fans_os.robot
+++ b/systest/test_fans_os.robot
@@ -24,10 +24,13 @@
 *** Variables ***
 
 # The fan speed-monitoring daemon takes less than one second to
-# notice a fan failure.   Allow system_response_time before checking
-# if there was a measurable response to the daemon, such as an increase
-# in RPMs of the other fans.
-${system_response_time}  30s
+# notice a fan failure. This is system configurable i.e. wspoon = 30sec before
+# marking a fan non-functional.
+# Allow system_response_time before checking if there was a measurable response
+# to the daemon, such as an increase in RPMs of the other fans.
+# NOTE: This time is relative to the BMC performance and can change
+# at anytime.
+${system_response_time}  5s
 
 # The @{fan_names} list holds the names of the fans in the system.
 @{fan_names}