try fix gethostname #2355

Job	Run time
test-ubuntu-latest-Security.Certificates	2m 8s
test-ubuntu-latest-Core	5m 6s
test-ubuntu-latest-Server	3m 38s
test-ubuntu-latest-Client	28m 25s
test-ubuntu-latest-Client.ComplexTypes	11m 27s
test-ubuntu-latest-PubSub	4m 6s
test-ubuntu-latest-Configuration	2m 12s
test-ubuntu-latest-Gds	3m 8s
test-windows-latest-Security.Certificates	2m 44s
test-windows-latest-Core	9m 31s
test-windows-latest-Server	5m 17s
test-windows-latest-Client	30m 49s
test-windows-latest-Client.ComplexTypes	13m 31s
test-windows-latest-PubSub	5m 12s
test-windows-latest-Configuration	3m 57s
test-windows-latest-Gds	8m 59s
test-macOS-latest-Security.Certificates	4m 3s
test-macOS-latest-Core	12m 59s
test-macOS-latest-Server	6m 8s
test-macOS-latest-Client	38m 28s
test-macOS-latest-Client.ComplexTypes	16m 20s
test-macOS-latest-PubSub	10m 5s
test-macOS-latest-Configuration	2m 35s
test-macOS-latest-Gds	4m 13s
	3h 55m 1s

Provide feedback