Add file content and owner modification probes #417

Job	Run time
Platform (x86_64) / Container Image Build	7s
Platform (x86_64) / Build	1m 37s
Platform (aarch64) / Build	5m 41s
Platform (aarch64) / Container Image Build	5m 40s
Test (x86_64) / Kernel (amazonlinux2)	4m 3s
Test (x86_64) / Kernel (centos)	2m 5s
Test (x86_64) / Kernel (debian)	3m 57s
Test (x86_64) / Kernel (fedora)	2m 58s
Test (x86_64) / Kernel (mainline)	4m 3s
Test (x86_64) / Kernel (rocky)	2m 34s
Test (x86_64) / Kernel (ubuntu-aws)	3m 56s
Test (x86_64) / Kernel (ubuntu-azure)	3m 59s
Test (x86_64) / Kernel (ubuntu-gcp)	3m 58s
Test (x86_64) / Kernel (ubuntu-gke)	1m 46s
Test (x86_64) / Kernel (ubuntu-oem)	3m 57s
Test (x86_64) / Kernel (ubuntu-oracle)	3m 55s
Test (aarch64)	1s
CI Merge Auditor	1s
	54m 18s

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