Handle device save down (#1011) #1592

Job	Run time
suites	3s
build	8m 22s
ct (router_channel_aws_SUITE.erl)	3m 8s
ct (router_channel_console_SUITE.erl)	3m 24s
ct (router_channel_http_SUITE.erl)	4m 19s
ct (router_channel_iot_central_SUITE.erl)	3m 23s
ct (router_channel_iot_hub_SUITE.erl)	4m 8s
ct (router_channel_no_channel_SUITE.erl)	3m 44s
ct (router_console_api_SUITE.erl)	4m 2s
ct (router_channel_mqtt_SUITE.erl)	3m 45s
ct (router_console_dc_tracker_SUITE.erl)	4m 12s
ct (router_decoder_custom_sup_SUITE.erl)	3m 6s
ct (router_data_SUITE.erl)	4m 35s
ct (router_decoder_custom_worker_SUITE.erl)	2m 50s
ct (router_decoder_SUITE.erl)	3m 37s
ct (router_device_channels_worker_SUITE.erl)	4m 23s
ct (router_device_devaddr_SUITE.erl)	4m 44s
ct (router_device_worker_SUITE.erl)	9m 32s
ct (router_discovery_SUITE.erl)	2m 55s
ct (router_device_routing_SUITE.erl)	7m 54s
ct (router_downlink_SUITE.erl)	5m 22s
ct (router_grpc_SUITE.erl)	3m 51s
ct (router_ics_eui_worker_SUITE.erl)	5m 45s
ct (router_ics_gateway_location_worker_SUITE.erl)	3m 11s
ct (router_ics_skf_worker_SUITE.erl)	4m 15s
ct (router_lorawan_SUITE.erl)	4m 38s
ct (router_metrics_SUITE.erl)	4m 24s
ct (router_sc_worker_SUITE.erl)	4m 11s
ct (router_SUITE.erl)	8m 22s
ct (router_v8_SUITE.erl)	3m 16s
ct (router_xor_filter_SUITE.erl)	3m 25s
dialyzer	7m 42s
eunit	2m 7s
xref	2m 34s
	2h 29m 9s

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