Added back 'services_only' tag (#930)
Added back 'services_only' tag (#930)

`services_only` was removed: https://github.com/samsung-cnct/kraken-lib/pull/488

I hit a dev edge case where I really needed `services_only`. Adding it back in. 

It's also still in the documentation.
samsung-cnct/k2,samsung-cnct/kraken-lib,samsung-cnct/k2,alejandroEsc/k2,alejandroEsc/k2,yenicapotediaz/k2,leahnp/k2,leahnp/k2,samsung-cnct/kraken-lib,yenicapotediaz/k2,samsung-cnct/kraken-lib