Use debconf to configure roundcube for postgresql

roles/webmail/tasks/roundcube.yml

@@ -8,8 +8,12 @@
   tags:
     - dependencies
 
-- name: Tell debconf we want to install Roundcube with postgresql backend
+- name: Tell debconf how to install Roundcube
   debconf: name=roundcube-core question='roundcube/database-type' vtype=select value='pgsql'
+  debconf: name=roundcube-core question='roundcube/pgsql/admin-user' vtype=text value='{{ db_admin_username }}'
+  debconf: name=roundcube-core question='roundcube/pgsql/admin-pass' vtype=password value='{{ db_admin_password }}'
+  debconf: name=roundcube-core question='roundcube/db/app-user' vtype=text value='{{ webmail_db_username }}'
+  debconf: name=roundcube-core question='roundcube/pgsql/app-pass' vtype=password value='{{ webmail_db_password }}'
 
 - name: Install Roundcube from jessie-backports
   apt: pkg={{ item }} state=latest default_release=jessie-backports
@@ -21,15 +25,6 @@
   tags:
     - dependencies
 
-- name: Configure Roundcube database
-  template: src={{ item.src }} dest={{ item.dest }} group={{ item.group }} mode={{ item.mode }} owner=root force=yes
-  with_items:
-  - { src: 'etc_dbconfig-common_roundcube.conf.j2', dest: '/etc/dbconfig-common/roundcube.conf', group: 'root',     mode: 600 }
-  - { src: 'etc_roundcube_debian-db.php.j2',        dest: '/etc/roundcube/debian-db.php',        group: 'www-data', mode: 640 }
-
-- name: set roundcube password
-  command: sudo -u {{ db_admin_username }} psql -d {{ webmail_db_database }} -c "ALTER USER {{ webmail_db_username }} with password '{{ webmail_db_password }}';"
-
 - name: Download carddav plugin release
   get_url:
     url: https://github.com/blind-coder/rcmcarddav/archive/carddav_{{ carddav_version }}.tar.gz

roles/webmail/templates/etc_dbconfig-common_roundcube.conf.j2

@@ -1,87 +0,0 @@
-# automatically generated by the maintainer scripts of roundcube
-# any changes you make will be preserved, though your comments
-# will be lost!  to change your settings you should edit this
-# file and then run "dpkg-reconfigure roundcube"
-
-# dbc_install: configure database with dbconfig-common?
-#              set to anything but "true" to opt out of assistance
-dbc_install='true'
-
-# dbc_upgrade: upgrade database with dbconfig-common?
-#              set to anything but "true" to opt out of assistance
-dbc_upgrade='true'
-
-# dbc_remove: deconfigure database with dbconfig-common?
-#             set to anything but "true" to opt out of assistance
-dbc_remove=''
-
-# dbc_dbtype: type of underlying database to use
-#	this exists primarily to let dbconfig-common know what database
-#	type to use when a package supports multiple database types.
-#	don't change this value unless you know for certain that this
-#	package supports multiple database types
-dbc_dbtype='pgsql'
-
-# dbc_dbuser: database user
-#	the name of the user who we will use to connect to the database.
-dbc_dbuser='{{ webmail_db_username }}'
-
-# dbc_dbpass: database user password
-#	the password to use with the above username when connecting
-#	to a database, if one is required
-dbc_dbpass='{{ webmail_db_password }}'
-
-# dbc_dballow: allowed host to connect from
-#       only for database types that support specifying the host from
-#       which the database user is allowed to connect from
-#       this string defines for which host the dbc_dbuser is allowed
-#       to connect
-#       this value is only really used again when you reconfigure the
-#       package
-dbc_dballow=''
-
-# dbc_dbserver: database host.
-#	leave unset to use localhost (or a more efficient local method
-#	if it exists).
-dbc_dbserver='localhost'
-
-# dbc_dbport: remote database port
-#	leave unset to use the default.  only applicable if you are
-#	using a remote database.
-dbc_dbport=''
-
-# dbc_dbname: name of database
-#	this is the name of your application's database.
-dbc_dbname='{{ webmail_db_database }}'
-
-# dbc_dbadmin: name of the administrative user
-#	this is the administrative user that is used to create all of the above
-#	The exception is the MySQL/MariaDB localhost case, where this value is
-#	ignored and instead is determined from /etc/mysql/debian.cnf.
-dbc_dbadmin='{{ db_admin_username }}'
-
-# dbc_basepath: base directory to hold database files
-#	leave unset to use the default.  only applicable if you are
-#	using a local (filesystem based) database.
-dbc_basepath=''
-
-##
-## postgresql specific settings.  if you don't use postgresql,
-## you can safely ignore all of these
-##
-
-# dbc_ssl: should we require ssl?
-#	set to "true" to require that connections use ssl
-dbc_ssl=''
-
-# dbc_authmethod_admin: authentication method for admin
-# dbc_authmethod_user: authentication method for dbuser
-#	see the section titled "AUTHENTICATION METHODS" in
-#	/usr/share/doc/dbconfig-common/README.pgsql for more info
-dbc_authmethod_admin=''
-dbc_authmethod_user=''
-
-##
-## end postgresql specific settings
-##
-

roles/webmail/templates/etc_roundcube_debian-db.php.j2

@@ -1,18 +0,0 @@
-<?php
-##
-## database access settings in php format
-## automatically generated from /etc/dbconfig-common/roundcube.conf
-## by /usr/sbin/dbconfig-generate-include
-##
-## by default this file is managed via ucf, so you shouldn't have to
-## worry about manual changes being silently discarded.  *however*,
-## you'll probably also want to edit the configuration file mentioned
-## above too.
-##
-$dbuser='{{ webmail_db_username }}';
-$dbpass='{{ webmail_db_password }}';
-$basepath='';
-$dbname='{{ webmail_db_database }}';
-$dbserver='localhost';
-$dbport='';
-$dbtype='pgsql';