Move get_machine_name to a more public looking place

[berland]

This function is imported by ert-configurations and should thus not be hidden in the config of the ensemble_evaluator. A more appropriate place is perhaps ert.shared.

ert/src/ert/ensemble_evaluator/config.py

Lines 27 to 34 in a02d71d

	def get_machine_name() -> str:
	"""Returns a name that can be used to identify this machine in a network
	A fully qualified domain name is returned if available. Otherwise returns
	the string `localhost`
	"""
	hostname = socket.gethostname()
	try:
	# We need the ip-address to perform a reverse lookup to deal with