Add UDP probes in anticipation of DNS monitoring #556

Job	Run time
Platform (x86_64) / Build	1m 6s
Platform (aarch64) / Build	6m 8s
Test (x86_64) / Kernel (amazonlinux2)	6m 53s
Test (x86_64) / Kernel (centos)	4m 21s
Test (x86_64) / Kernel (debian)	6m 54s
Test (x86_64) / Kernel (fedora)	6m 51s
Test (x86_64) / Kernel (mainline)	6m 51s
Test (x86_64) / Kernel (rocky)	4m 26s
Test (x86_64) / Kernel (ubuntu-aws)	6m 53s
Test (x86_64) / Kernel (ubuntu-azure)	6m 52s
Test (x86_64) / Kernel (ubuntu-gcp)	6m 47s
Test (x86_64) / Kernel (ubuntu-gke)	3m 59s
Test (x86_64) / Kernel (ubuntu-oem)	6m 51s
Test (x86_64) / Kernel (ubuntu-oracle)	6m 53s
Test (aarch64) / Kernel (amazonlinux2)	1m 49s
Test (aarch64) / Kernel (debian)	1m 52s
Test (aarch64) / Kernel (fedora)	1m 55s
Test (aarch64) / Kernel (mainline)	1m 51s
Test (aarch64) / Kernel (rocky)	1m 48s
Test (aarch64) / Kernel (ubuntu-aws)	1m 49s
Test (aarch64) / Kernel (ubuntu-azure)	1m 50s
Test (aarch64) / Kernel (ubuntu-gcp)	1m 48s
Test (aarch64) / Kernel (ubuntu-gke)	1m 54s
Test (aarch64) / Kernel (ubuntu-oracle)	1m 49s
CI Merge Auditor	1s
	1h 40m 11s

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