New feature: always install latest keepalived

Setting keepalived_use_latest_stable to true will always install
latest keepalived.

README.md

@@ -16,6 +16,7 @@ Examples are given in the vars folder. Don't try them immediately, they won't wo
 
 The main variables are:
 
+* keepalived_use_latest_stable: This is by default set to false. When set to true, the role will always install latest version of keepalived, making it restart when a new version appears in the ppa.
 * keepalived_instances: This is a mandatory dict. It gathers information about the vips, the prefered state (master/backup), the VRRIP IDs and priorities, the password used for authentication...
 * keepalived_sync_groups: This is a mandatory dict. It groups items defined in keepalived_instances, and (if desired) allow the configuration of notifications scripts per group of keepalived_instances. Notification scripts are triggered on keepalived's state change and are facultative.
 * keepalived_scripts: This is an optional dict where you could have checking scripts that can trigger the notifications scripts.

defaults/main.yml

@@ -16,6 +16,7 @@
 ## APT Cache options
 cache_timeout: 600
 
+keepalived_use_latest_stable: False
 keepalived_instances: []
 keepalived_sync_groups: []
 keepalived_bind_on_non_local: False

tasks/main.yml

@@ -56,6 +56,15 @@
   apt:
     pkg: keepalived
     state: present
+  when: not keepalived_use_latest_stable | bool
+  tags:
+    - keepalived-apt-packages
+
+- name: install keepalived
+  apt:
+    pkg: keepalived
+    state: latest
+  when: keepalived_use_latest_stable | bool
   tags:
     - keepalived-apt-packages