Add sumconnector (#5733) #11779

Job	Run time
setup-environment	1m 39s
coverage	9m 8s
cross-compile (binaries-darwin_amd64)	5m 2s
generate-metrics	5m 34s
cross-compile (binaries-darwin_arm64)	5m 4s
gofmt	5m 31s
cross-compile (binaries-linux_amd64)	4m 55s
lint	15m 0s
cross-compile (binaries-linux_arm64)	4m 51s
cross-compile (binaries-windows_amd64)	5m 5s
test	15m 58s
cross-compile (binaries-linux_ppc64le)	4m 54s
tidy	2m 14s
	1h 24m 55s

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