tmf.xml: Add support for consuming event in the fsm

tmf.xml: Add support for consuming event in the fsm

This patch adds the possibility for an fsm to be consuming. A consuming
fsm can use an ongoing event for only one of its scenario.

Change-Id: Iaa2a883ef212019c1ef87811722ee863c36567f7
Signed-off-by: Jean-Christian Kouame <jean-christian.kouame@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/78189
Reviewed-by: Hudson CI
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>