roles/archweb: Added a register for virtualenv changes and to deploy archweb in this case. Also changed nginx template to use the main domain.

roles/archweb: Deploy archweb on config changes too. Also, add a check to add ssl_require mode when connecting to remote hosts.

roles/archweb: Add an alternate domains variable, with the proper templating, redirecting even tls requests to the main domain

playbooks: Add the archweb role to apollo and change the orion role to use the new default variables, with a global db host variable

roles/dbscripts: Addes no_log: true on the gen_rsyncd.conf.pl task, to avoid printing the user password

roles/dbscripts: Change gen_rsyncd.conf template to use archweb_dbscripts user and host configuration

roles/archweb: Create a pgp_import service and a pacman hook to run when archlinux-keyring is updated

roles/postgres: Create a new postgres_ssl_hosts variable that will be used to determine which hosts can login using ssl

roles/archweb: Memcached service.
roles/postgresql: Initial work on SSL support.

roles/archweb: Make archweb install and use it's own memcached service, running as the archweb user and using a socket.

This boils down to changing the comments and commenting things that are
default anyway, to reduce the distance to the packaged config.

roles/postgres: Added default values to the max_connections and shared_buffers variables.

roles/security-tracker: Idempotency fix. No need to enable and start a service when it is started by a timer.