Rewriting post-deploy to handle multi-line VHOST. Discarded SSL for now.
Added SSL checking, but actual generation of SSL enabled nginx.conf not
implemented yet.
SSL is not set up for each SSL_VHOST.
Minor bug fixes: Setting SERVER_NAME and also non-SSL nginx.conf does
not overwrite the SSL generated one, but rather appends.
Moved 'upstream' nginx conf option to post-deploy since it's once-off
and prevents nginx from starting if duplicated for each new domain.