[arenaserver] handle abrupt agent deconnection

[xtuc]

One agent seems to have crash and cannot come back, arenaserver is just complaining:

{"time":"2017-09-15T06:36:53Z","service":"commserver","message":"Connexion closed unexpectedly; EOF","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}
{"time":"2017-09-15T06:36:53Z","service":"arenaserver","message":"ERROR: could not set perception on agent cf472af7-fe5b-498b-928b-8bb80422ddc4","context":{"hostname":"daf4a23cd795"}}

• [ ] Kill the container and restart the agent?
• [ ] Remove it from agents in the game?
• [ ] Retry to establish a connection?

[xtuc]

Ok in the trainer