Reset HeartBeat timer on Send HeartBeat to SDL
Reset HeartBeat timer on Send HeartBeat to SDL

If SDL doen not send HB for HBtimeout, ATF should try to send own heartbeat.
ANd it should wait another one HBtumeout secconds

aderiabin/sdl_atf,aderiabin/sdl_atf,aderiabin/sdl_atf