add management of /etc/hosts and hostname

templates/hosts.j2

@@ -0,0 +1,16 @@
+# {{ ansible_managed }}
+
+127.0.0.1   localhost.localdomain localhost
+127.0.1.1   {{ inventory_hostname }} {{ inventory_hostname_short }}
+
+::1         localhost ip6-localhost ip6-loopback
+ff02::1     ip6-allnodes
+ff02::2     ip6-allrouters
+
+{% for host in common_hostname_hosts_additional %}
+{% if host['short'] is defined %}
+{{ host['ip'] }} {{ host['fqdn'] }} {{ host['short'] }}
+{% else %}
+{{ host['ip'] }} {{ host['fqdn'] }}
+{% endif %}
+{% endfor %}