Avoid doing a real name resolution in sfIpAddress_fromString test #1422

Job	Run time
Documentation	1m 15s
Formatting	6s
Windows VS2019 x86 Shared Debug	4m 57s
Analyze	2m 27s
Windows VS2019 x86 Shared Release	5m 8s
Windows VS2019 x86 Static Debug	4m 50s
Windows VS2019 x86 Static Release	5m 2s
Windows VS2019 x64 Shared Debug	4m 45s
Windows VS2019 x64 Shared Release	4m 33s
Windows VS2019 x64 Static Debug	4m 24s
Windows VS2019 x64 Static Release	4m 40s
Windows VS2022 x86 Shared Debug	5m 4s
Windows VS2022 x86 Shared Release	5m 36s
Windows VS2022 x86 Static Debug	4m 40s
Windows VS2022 x86 Static Release	5m 33s
Windows VS2022 x64 Shared Debug	5m 3s
Windows VS2022 x64 Shared Release	5m 51s
Windows VS2022 x64 Static Debug	5m 40s
Windows VS2022 x64 Static Release	5m 32s
Windows ClangCL Shared Debug	4m 22s
Windows ClangCL Shared Release	5m 58s
Windows ClangCL Static Debug	5m 12s
Windows ClangCL Static Release	5m 54s
Windows Clang Shared Debug	2m 48s
Windows Clang Shared Release	2m 30s
Windows Clang Static Debug	3m 33s
Windows Clang Static Release	3m 27s
Linux GCC Shared Debug	1m 18s
Linux GCC Shared Release	1m 33s
Linux GCC Static Debug	1m 12s
Linux GCC Static Release	1m 25s
Linux Clang Shared Debug	1m 25s
Linux Clang Shared Release	1m 40s
Linux Clang Static Debug	1m 21s
Linux Clang Static Release	1m 37s
MacOS Shared Debug	1m 26s
MacOS Shared Release	1m 55s
MacOS Static Debug	1m 41s
MacOS Static Release	1m 27s
	2h 16m 50s

Provide feedback