Make sure apt cache is updated before installing packages

deployment/ansible-role-mongodb/tasks/install.yml

@@ -7,10 +7,10 @@
   apt_repository: repo="deb http://repo.mongodb.org/apt/debian wheezy/mongodb-org/3.2 main" state=present
 
 - name: install mongodb-org
-  apt: pkg=mongodb-org=3.2.1 state=present
+  apt: pkg=mongodb-org=3.2.1 state=present update_cache=yes
 
 - name: install PyMongo from apt
-  apt: pkg=python-pymongo state=latest
+  apt: pkg=python-pymongo state=latest update_cache=yes
   when: not mongodb_pymongo_pip_version
 
 - name: install pip

deployment/ansible-role-nginx/tasks/main.yml

 ---
 - name: install nginx
-  apt: pkg=nginx state=present
+  apt: pkg=nginx state=present update_cache=yes

deployment/ansible-role-sentinel/tasks/config.yml

@@ -10,7 +10,7 @@
   apt_repository: repo="deb http://http.debian.net/debian jessie-backports main" state=present
 
 - name: install system dependencies
-  apt: pkg={{ item }} state=present
+  apt: pkg={{ item }} state=present update_cache=yes
   with_items:
     - apt-transport-https
     - build-essential