Add tach sensor functional delay

Add ability to define a delay to marking a tach sensor as functional
when it transitions from a nonfunctional state. Essentially this gives
the option to wait a given amount of time that a tach sensor must be
within the allowed deviation before being updated to functional.

Default functional delay = 0 seconds

Tested: Current fan definition values function the same

Change-Id: I58bf70d2335e27c06037b755cbee8dae81528a5a
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/monitor/gen-fan-monitor-defs.py b/monitor/gen-fan-monitor-defs.py
index 7a1b874..83dcbc0 100755
--- a/monitor/gen-fan-monitor-defs.py
+++ b/monitor/gen-fan-monitor-defs.py
@@ -28,6 +28,7 @@
 {
 %for fan_data in data.get('fans', {}):
     FanDefinition{"${fan_data['inventory']}",
+                  ${fan_data.get('functional_delay', 0)},
                   ${fan_data['allowed_out_of_range_time']},
                   ${fan_data['deviation']},
                   ${fan_data['num_sensors_nonfunc_for_fan_nonfunc']},