service support in tap command

[siggy]

Once #802 and #803 are implemented, the tap command will support the following for target and match ResourceSelection's:
https://github.com/runconduit/conduit/blob/653dc6bfaac3f5d0feafe1dc214f28f8bc89a3fb/controller/api/public/stat_summary.go#L49-L54

Modify this to support service objects on the match ResourceSelection.

Depends on #802 and #803.

Part of #778.

[siggy]

Resolved in #827.

$ bin/conduit tapByResource -n emojivoto deploy/web --to svc/voting-svc
req id=0:2349 src=10.1.7.197:56018 dst=10.1.7.196:8080 :method=POST :authority=voting-svc.emojivoto:8080 :path=/emojivoto.v1.VotingService/VotePoop
rsp id=0:2349 src=10.1.7.197:56018 dst=10.1.7.196:8080 :status=200 latency=2903µs
end id=0:2349 src=10.1.7.197:56018 dst=10.1.7.196:8080 grpc-status=Unknown duration=0µs response-length=0B