Update default floor action

Add action to be able to update the default fan floor thru a configured
event.

Tested:
    Default floor is updated based on state of group property value

Change-Id: I83a4ae313636abbe1e5c8b6ddfc2d5f9d281f844
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/control/example/events.yaml b/control/example/events.yaml
index 4c0e9be..ac33ca0 100644
--- a/control/example/events.yaml
+++ b/control/example/events.yaml
@@ -227,6 +227,12 @@
 #          - property
 #          - factor
 #          - delta
+#    - name: update_default_floor
+#      description: >
+#          Update the default fan floor to the given speed
+#      parameters:
+#          - property
+#          - speed
 #
 #events:
 #    - name: missing_before_high_speed