Add Go tests for memfd and friends #621

Job	Run time
Platform (aarch64) / Build	6m 36s
Platform (x86_64) / Build	1m 7s
Test (x86_64) / Kernel (amazonlinux2)	7m 1s
Test (x86_64) / Kernel (centos)	2m 35s
Test (x86_64) / Kernel (debian)	6m 24s
Test (x86_64) / Kernel (fedora)	2m 51s
Test (x86_64) / Kernel (mainline)	11m 40s
Test (x86_64) / Kernel (rocky)	2m 48s
Test (x86_64) / Kernel (ubuntu-aws)	12m 28s
Test (x86_64) / Kernel (ubuntu-azure)	11m 12s
Test (x86_64) / Kernel (ubuntu-gcp)	8m 28s
Test (x86_64) / Kernel (ubuntu-gke)	2m 13s
Test (x86_64) / Kernel (ubuntu-oem)	5m 15s
Test (x86_64) / Kernel (ubuntu-oracle)	7m 52s
Test (aarch64) / Kernel (amazonlinux2)	44m 54s
Test (aarch64) / Kernel (debian)	7m 30s
Test (aarch64) / Kernel (fedora)	13m 1s
Test (aarch64) / Kernel (mainline)	1h 2m 21s
Test (aarch64) / Kernel (rocky)	7m 2s
Test (aarch64) / Kernel (ubuntu-aws)	46m 32s
Test (aarch64) / Kernel (ubuntu-azure)	46m 49s
Test (aarch64) / Kernel (ubuntu-gcp)	11m 17s
Test (aarch64) / Kernel (ubuntu-gke)	7m 19s
Test (aarch64) / Kernel (ubuntu-oracle)	35m 53s
CI Merge Auditor	1s
	6h 11m 9s

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