EvseSlac: No repetition of CM_ATTEN_CHAR.IND in timeout case

[lategoodbye]

Describe the bug

According to ISO 15118-3 requirement V2G3-A09-46 the EVSE should repeat up to C_EV_match_retry times the CM_ATTEN_CHAR.IND in case it doesn't receive a CM_ATTEN_CHAR.RSP within the defined timeout.

Everest log (based on EVerest 2024.9.0):

2022-04-28T20:04:44.268371+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): initialized, waiting for CM_START_ATTEN_CHAR_IND
2022-04-28T20:04:44.508219+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_START_ATTEN_CHAR_IND, going to substate SOUNDING
2022-04-28T20:04:44.528211+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): needs to be in state WAIT_FOR_START_ATTEN_CHAR for CM_START_ATTEN_CHAR_IND
2022-04-28T20:04:44.548193+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): needs to be in state WAIT_FOR_START_ATTEN_CHAR for CM_START_ATTEN_CHAR_IND
2022-04-28T20:04:44.568132+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_MNBC_SOUND_IND
2022-04-28T20:04:44.576280+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_ATTEN_PROFILE_IND
2022-04-28T20:04:44.588110+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_MNBC_SOUND_IND
2022-04-28T20:04:44.596262+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_ATTEN_PROFILE_IND
2022-04-28T20:04:44.628586+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_MNBC_SOUND_IND
2022-04-28T20:04:44.635981+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_ATTEN_PROFILE_IND
2022-04-28T20:04:44.648051+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_MNBC_SOUND_IND
2022-04-28T20:04:44.656285+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_ATTEN_PROFILE_IND
2022-04-28T20:04:44.667974+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_MNBC_SOUND_IND
2022-04-28T20:04:44.676274+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_ATTEN_PROFILE_IND
2022-04-28T20:04:44.688160+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_MNBC_SOUND_IND
2022-04-28T20:04:44.696294+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_ATTEN_PROFILE_IND
2022-04-28T20:04:44.708078+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_MNBC_SOUND_IND
2022-04-28T20:04:44.716238+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): received CM_ATTEN_PROFILE_IND
2022-04-28T20:04:45.107526+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): Sounding not yet complete but timed out, going to sub-state FINALIZE_SOUNDING
2022-04-28T20:04:45.152772+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): Finalize sounding, sending CM_ATTEN_CHAR_IND
2022-04-28T20:04:45.353075+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Session (run_id=AD45CD1DE2988D11, ev_mac=00:01:87:0F:75:D3): Waiting for CM_ATTEN_CHAR_RSP timed out -> failed
2022-04-28T20:04:45.354169+0200 chargesom manager[264]: [INFO] evse_slac:EvseS  :: Entered Failed state

Hardware
EVSE: Charge SOM DC (uses Vertexcom MS120x as PLC)
EV: CMS (uses QCA7005 as PLC)

EVerest Domain

SLAC

Affected EVerest Module

EvseSlac

To Reproduce

1. Setup a EV simulator, which doesn't reply to the first CM_ATTEN_CHAR.IND
2. start SLAC process

Anything else?

No response