cli: manifest get: Use project standard YAML marshalling.
cli: manifest get: Use project standard YAML marshalling.

- Addresses issue where 'sous manifest get' used all lowercase
  YAML field names, whereas the standard in Sous is to use
  Go-style exported field names (upper camel case).

samsalisbury/sous,samsalisbury/sous,opentable/sous,opentable/sous,samsalisbury/sous,samsalisbury/sous,opentable/sous,opentable/sous,samsalisbury/sous,opentable/sous