Fixes for Ubuntu 14.04 LTS 'trusty'

* Postfix: Trusty comes with postgresql 9.3, not 9.1
* owncloud 6.0.1 is part of the distribution, doesn't require opensuse repository
* owncloud requires libapache2-mod-php5
* uses prosody repository that matches the ansible_distribution_release (trusty, wheezy, etc)

roles/mailserver/tasks/postfix.yml

-- name: Install Postfix and related packages
+- name: Install Postfix 9.1 and related packages
   apt: pkg={{ item }} state=installed
   with_items:
     - postfix
     - postfix-pgsql
     - python-psycopg2
     - postfix-pcre
+  when: ansible_distribution_release != 'trusty'
+
+- name: Install Postfix 9.3 and related packages for Ubuntu Trusty
+  apt: pkg={{ item }} state=installed
+  with_items:
+    - postfix
+    - libsasl2-modules
+    - sasl2-bin
+    - postgrey
+    - postgresql-9.3
+    - postfix-pgsql
+    - python-psycopg2
+    - postfix-pcre
+  when: ansible_distribution_release == 'trusty'
 
 - name: Set postgres password
   command: sudo -u {{ db_admin_username }} psql -d {{ db_admin_username }} -c "ALTER USER postgres with  password '{{ db_admin_password }}';"

roles/owncloud/tasks/owncloud.yml

 
 - name: Ensure repository key for ownCloud is in place
   apt_key: url=http://download.opensuse.org/repositories/isv:ownCloud:community/Debian_7.0/Release.key state=present
+  when: ansible_distribution == 'Debian'
 
 - name: Add ownCloud OpenSuSE repository
   apt_repository: repo='deb http://download.opensuse.org/repositories/isv:ownCloud:community/Debian_7.0/ /'
+  when: ansible_distribution == 'Debian'
 
-- name: Install ownCloud from OpenSuSE repository
+- name: Install ownCloud (possibly from OpenSuSE repository)
   apt: pkg=owncloud update_cache=yes
 
-- name: Install PHP-APC
-  apt: pkg=php-apc
+- name: Install PHP dependencies
+  apt: pkg={{ item }} state=present
+  with_items:
+    - php-apc
+    - libapache2-mod-php5
+
+- name: Owncloud www directory
+  file: state=directory path=/var/www/owncloud
 
 - name: Store ownCloud data securely
   command: mv /var/www/owncloud/data /decrypted/owncloud-data creates=/decrypted/owncloud-data

roles/xmpp/tasks/prosody.yml

 - name: Ensure repository key for Prosody is in place
   apt_key: url=https://prosody.im/files/prosody-debian-packages.key state=present
 
-- name: Add Prosody repository
-  apt_repository: repo='deb http://packages.prosody.im/debian wheezy main'
+# Prosody supplies repo for sid, squeeze, wheezy, jessie, trusty, saucy, raring, quantal, precise and lucid
+- name: Add Prosody Debian/Ubuntu repository
+  apt_repository: repo="deb http://packages.prosody.im/debian {{ ansible_distribution_release }} main"
 
 - name: Install Prosody from official repository
   apt: pkg=prosody update_cache=yes