Remove f_sleep due to side effect: all UT messages were trapped by a_utDefault() while f_sleep is running

Add a_shutdown altstep
Move f_prInitialState() into f_cfUp()

In receive templates, replace default value ? for p_validityDuration by * because of in ASN.1, a DEFAULT value constraint could be replaced by an omit

Add PICS_IUT_CERTIFICATES_PUSHING

Introduce PX_IUT_STATION_TYPE pixit
Bug fixed in function f_poCancelEvent()

Change AID for CAM to 36
Change AID for CAM to 37
Add logs on function failure
Set vc_hashedId8ToBeUsed to 'FFFFFFFFFFFFFFFF'O in case of the IUT can not manage test certificates

Validation CAM/DENM with Commsignia IUT: Remove useless trafficClass field in UtDenmTrigger & UtDenmUpdate commands

- name change to reflect ETSI module
- Type change to reflect that source ASN.1 we have SPAT and MapData as main message types

/!\ work in progress. Compilation unsuccessful /!\