Update fan control log collection directive

Change-Id: I5f8e4878379508e4adab359f37e3b330fa18d507
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/lib/openbmc_ffdc_list.py b/lib/openbmc_ffdc_list.py
index 873f845..f72af6f 100755
--- a/lib/openbmc_ffdc_list.py
+++ b/lib/openbmc_ffdc_list.py
@@ -70,8 +70,7 @@
         'bmcweb_persistent_data.json': 'cat /home/root/bmcweb_persistent_data.json'
         + ' > /tmp/bmcweb_persistent_data.json',
         'GUARD_list.txt': 'guard -l > /tmp/GUARD_list.txt 2>&1',
-        'fan_control_dump.json': 'fanctl dump; cat /tmp/fan_control_dump.json'
-        + ' /tmp/fan_control_dump.json 2>&1',
+        'fan_control_dump.json': 'fanctl dump; sleep 5',
         'DEVTREE': 'cat /var/lib/phosphor-software-manager/pnor/rw/DEVTREE > /tmp/DEVTREE 2>&1',
     },
 }