lets use state=latest everywhere for apt cmds.

debian/roles/common/tasks/main.yml

@@ -17,7 +17,7 @@
   - restart rsyslog
   - restart cron
 - name: Install required packages
-  apt: pkg={{ item }} state=present
+  apt: pkg={{ item }} state=latest
   with_items:
      - most
      - zsh

debian/roles/webservers-nginx/tasks/main.yml

@@ -4,7 +4,7 @@
 - name: Add nginx upstream repository
   apt_repository: repo='deb http://nginx.org/packages/debian/ wheezy nginx' state=present update_cache=yes
 - name: Install nginx package
-  apt: pkg=nginx state=present
+  apt: pkg=nginx state=latest
 - name: Stop nginx for now and also make it start on boot
   service: name=nginx state=stopped enabled=yes
 - name: Make nginx related dirs