wspoon: Add fan monitor start delay

Now that phosphor-fan-monitor starts at multi-user instead of the
fans-ready target, it needs a JSON config option to let it know when to
start monitoring after the fans have ramped up.

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: If8eef303ee585dd30b3fbe9764a624eeab3b1a8a
diff --git a/meta-ibm/recipes-phosphor/fans/phosphor-fan-monitor-config/witherspoon/config.json b/meta-ibm/recipes-phosphor/fans/phosphor-fan-monitor-config/witherspoon/config.json
index 5923ccc..f0df157 100644
--- a/meta-ibm/recipes-phosphor/fans/phosphor-fan-monitor-config/witherspoon/config.json
+++ b/meta-ibm/recipes-phosphor/fans/phosphor-fan-monitor-config/witherspoon/config.json
@@ -6,6 +6,7 @@
          "allowed_out_of_range_time": 30,
          "deviation": 15,
          "num_sensors_nonfunc_for_fan_nonfunc": 1,
+         "monitor_start_delay": 20,
          "sensors": [
             {
                "name": "fan0_0",
@@ -23,6 +24,7 @@
          "allowed_out_of_range_time": 30,
          "deviation": 15,
          "num_sensors_nonfunc_for_fan_nonfunc": 1,
+         "monitor_start_delay": 20,
          "sensors": [
             {
                "name": "fan1_0",
@@ -54,6 +56,7 @@
          "allowed_out_of_range_time": 30,
          "deviation": 15,
          "num_sensors_nonfunc_for_fan_nonfunc": 1,
+         "monitor_start_delay": 20,
          "sensors": [
             {
                "name": "fan2_0",
@@ -71,6 +74,7 @@
          "allowed_out_of_range_time": 30,
          "deviation": 15,
          "num_sensors_nonfunc_for_fan_nonfunc": 1,
+         "monitor_start_delay": 20,
          "sensors": [
             {
                "name": "fan3_0",