extension: cluster router #1423

Job	Run time
changes	5s
discover	4s
go-checks / go-checks	2m 0s
rust-checks / rust-checks (dns-gateway, rust, rust, dns-gateway)	2m 42s
rust-checks / rust-checks (ip-restriction, rust, rust, ip-restriction)	2m 27s
extproc-checks / extproc-checks (example-ext-proc, ext_proc, go, example-ext-proc)	1m 48s
go-checks / integration (distroless-dev)	1m 26s
go-checks / integration (v1.38.0)	1m 31s
extensions-checks	3s
	12m 6s

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