Add support for DHCP hostname #1152

Job	Run time
compile-examples (arduino:mbed:nano33ble)	7m 35s
compile-examples (arduino:mbed:envie_m7)	17m 0s
compile-examples (arduino:mbed:nanorp2040connect)	13m 45s
compile-examples (arduino:mbed:nicla_sense)	7m 37s
compile-examples (arduino:mbed:nicla_vision)	12m 3s
compile-examples (arduino:mbed:opta)	10m 33s
compile-examples (arduino:mbed:giga)	24m 47s
compile-examples (arduino:mbed:nicla_voice)	6m 23s
compile-examples (arduino:mbed:edge_control)	5m 31s
compile-examples (arduino:mbed:envie_m7:target_core=cm4, - libraries/KernelDebug - libraries/Port...	4m 26s
	1h 49m 40s

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