Add support for hostless pipelines #7925

Job	Run time
GCC static -fanalyzer	4m 21s
Sparse check	3m 32s
GCC build arm64	23m 49s
Clang build x86_64	2m 0s
GCC build arm64 allmodconfig	2m 5s
GCC build X86_64 with W=1	1m 54s
GCC build i386	16m 58s
GCC build X86_64 with W=1 allmodconfig	1m 29s
GCC build X86_64	19m 51s
	1h 15m 59s

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