CI/CD

add deserialization to SocketAddr struct to make port for dns_config optional #2685

Job	Run time
lint (18.x)	3m 13s
grafana-compatibilitycheck (ott-vis-panel)	2m 32s
grafana-compatibilitycheck (ott-vis-datasource)	2m 33s
typos	8s
test (18.x)	3m 32s
test (20.x)	3m 8s
Deploy Monolith on fly.io (staging)	0s
Deploy Monolith on fly.io (prod)	0s
Deploy docker image	0s
Deploy Balancer on fly.io (staging)	0s
Deploy Balancer on fly.io (prod)	0s
	15m 6s

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