Make services/{admin, httpd, subscriber, udp} golintable

[karlding]

Make changes to:

• services/admin
• services/httpd
• services/subscriber
• services/udp

services/admin
admin/service.go:84:1: exported method Service.WithLogger should have comment or be unexported

services/httpd
response_writer.go:123:12: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary)

services/subscriber
subscriber/http.go:57:6: func createTlsConfig should be createTLSConfig

services/udp
service.go:23:2: don't use ALL_CAPS in Go names; use CamelCase

Required for all non-trivial PRs

• Rebased/mergable
• Tests pass
• CHANGELOG.md updated
• Sign CLA (if not already signed)

[corylanou]

Looks good. Can you update the changelog and give yourself credit as well.

Thanks!

[karlding]

Alright. I rebased my branch on top of master, and made the change to the CHANGELOG. I thought it was such a trivial change that it didn't warrant a change to the CHANGELOG.

[jsternberg]

Can you rebase this and update the changelog to resolve the conflict? I'll merge it right after. Thanks.

[karlding]

Rebased