CI/CD

add deserialization to SocketAddr struct to make port for dns_config optional #2664

Job	Run time
grafana-compatibilitycheck (ott-vis-panel)	2m 45s
lint (18.x)	3m 11s
test (18.x)	3m 26s
grafana-compatibilitycheck (ott-vis-datasource)	2m 29s
test (20.x)	2m 59s
typos	3s
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
	14m 53s

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