Add Go tests for memfd and friends #615

Job	Run time
Platform (x86_64) / Build	1m 10s
Platform (aarch64) / Build	6m 19s
Test (x86_64) / Kernel (amazonlinux2)	7m 19s
Test (x86_64) / Kernel (centos)	2m 37s
Test (x86_64) / Kernel (debian)	6m 22s
Test (x86_64) / Kernel (fedora)	3m 4s
Test (x86_64) / Kernel (mainline)	12m 1s
Test (x86_64) / Kernel (rocky)	2m 55s
Test (x86_64) / Kernel (ubuntu-aws)	11m 25s
Test (x86_64) / Kernel (ubuntu-azure)	11m 15s
Test (x86_64) / Kernel (ubuntu-gcp)	8m 47s
Test (x86_64) / Kernel (ubuntu-gke)	2m 1s
Test (x86_64) / Kernel (ubuntu-oem)	5m 21s
Test (x86_64) / Kernel (ubuntu-oracle)	7m 18s
Test (aarch64) / Kernel (amazonlinux2)	44m 46s
Test (aarch64) / Kernel (debian)	7m 38s
Test (aarch64) / Kernel (fedora)	12m 9s
Test (aarch64) / Kernel (mainline)	1h 0m 42s
Test (aarch64) / Kernel (rocky)	6m 54s
Test (aarch64) / Kernel (ubuntu-aws)	45m 59s
Test (aarch64) / Kernel (ubuntu-azure)	45m 40s
Test (aarch64) / Kernel (ubuntu-gcp)	11m 6s
Test (aarch64) / Kernel (ubuntu-gke)	8m 35s
Test (aarch64) / Kernel (ubuntu-oracle)	34m 57s
CI Merge Auditor	1s
	6h 6m 21s

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