Deploy hook run order:

- pre-pre-deploy-root
- pre-pre-deploy
  (pre-deploy URL from sysadmin)
- pre-deploy-root
- pre-deploy
  (DEPLOY)
- post-deploy-root
- post-deploy
  (post-deploy URL from sysadmin)
- post-post-deploy-root
- post-post-deploy


Hook structure

[hooks]					(default: /etc/sys-admin/hooks)
 +- pre-deploy.sh			(global pre-deploy script)
 +- [client]
     +- post-deploy.sh			(client specific post-deploy script)
     +- [domain]
         +- pre-deploy.sh		(domain specific pre-deploy script)
         +- post-post-deploy-root.sh	(domain specific post-post-deploy-root script)
         +- [host]
            +- pre-deploy.sh		(vhost specific pre-deploy script)


Currently supported envvars:

VH_CLIENT
VH_CLIENTID
VH_CLIENT_PATH
VH_UID

VH_DOMAIN
VH_DOMAIN_PATH

VH_HOST
VH_NAME
VH_PATH
VH_TOKEN
VH_VHOSTID