Add Go tests for memfd and friends #613

Job	Run time
Platform (x86_64) / Build	1m 8s
Platform (aarch64) / Build	6m 40s
Test (x86_64) / Kernel (amazonlinux2)	1m 3s
Test (x86_64) / Kernel (centos)	46s
Test (x86_64) / Kernel (debian)	1m 2s
Test (x86_64) / Kernel (fedora)	1m 5s
Test (x86_64) / Kernel (mainline)	1m 23s
Test (x86_64) / Kernel (rocky)	54s
Test (x86_64) / Kernel (ubuntu-aws)	56s
Test (x86_64) / Kernel (ubuntu-azure)	55s
Test (x86_64) / Kernel (ubuntu-gcp)	49s
Test (x86_64) / Kernel (ubuntu-gke)	56s
Test (x86_64) / Kernel (ubuntu-oem)	55s
Test (x86_64) / Kernel (ubuntu-oracle)	49s
Test (aarch64) / Kernel (amazonlinux2)	13m 4s
Test (aarch64) / Kernel (debian)	7m 19s
Test (aarch64) / Kernel (fedora)	11m 26s
Test (aarch64) / Kernel (mainline)	13m 3s
Test (aarch64) / Kernel (rocky)	6m 42s
Test (aarch64) / Kernel (ubuntu-aws)	13m 3s
Test (aarch64) / Kernel (ubuntu-azure)	13m 3s
Test (aarch64) / Kernel (ubuntu-gcp)	11m 32s
Test (aarch64) / Kernel (ubuntu-gke)	7m 12s
Test (aarch64) / Kernel (ubuntu-oracle)	13m 2s
CI Merge Auditor	1s
	2h 8m 48s

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