Add 'packages' tag to any task doing package stuff

For idempotence we need to run all apt-related tasks, like editing
source files, adding keys, installing packages, etc, when running
the 'packages' tag.

roles/php-fpm/tasks/Debian.yml

@@ -7,7 +7,7 @@
     - php5-mysql
     - php5-gd
     - php5-curl
-  tags: php-fpm
+  tags: php-fpm, packages
 
 - name: Copy php5-fpm pool config
   template: src=pool.conf.j2 dest=/etc/php5/fpm/pool.d/{{ item.domain_name }}.conf owner=root group=root mode=0644

roles/php-fpm/tasks/Ubuntu.yml

@@ -10,7 +10,7 @@
     # for Piwik
     - php7.0-mbstring
     - php7.0-xml
-  tags: php-fpm
+  tags: php-fpm, packages
 
 - name: Copy php-fpm pool config
   template: src=php7.0-pool.conf.j2 dest=/etc/php/7.0/fpm/pool.d/{{ item.domain_name }}.conf owner=root group=root mode=0644