mnt: Fix post request for property update
mnt: Fix post request for property update

This patch add fr and rb variables to support CTT test.
CTT requests update(POST) for fr and rb properties, CTT then
retrieve(GET) the properties to confirm it has changed.

Signed-off-by: Inho Oh <4e2f54c8dbf3cbb0cc3f6504bbb1d5484d5f42b6@gmail.com>

webispy/ocf_mylight,webispy/ocf_mylight