Add a state which supports overwriting /etc/hosts.

Signed-off-by: Rene Jochum <rene@jochums.at>

network/hostsfile.sls

+#!jinja|yaml
+# vi: set ft=yaml.jinja :
+
+{% if salt['pillar.get']('network:hostsfile:fqdn', False) %}
+network_hostsfile:
+  file:
+    - managed
+    - name: /etc/hosts
+    - source: salt://network/templates/etc_hosts.jinja
+    - template: jinja
+    - context:
+        fqdn: {{ salt['pillar.get']('network:hostsfile:fqdn') }}
+        hostname: {{ salt['pillar.get']('network:hostsfile:hostname') }}
+{% endif %}

network/templates/etc_hosts.jinja

+# This file is managed by salt, do not edit!
+127.0.0.1               localhost.localdomain
+127.0.1.1               {{ fqdn }} {{ hostname }}
+
+# The following lines are desirable for IPv6 capable hosts
+::1             ip6-localhost           ip6-loopback            localhost
+fe00::0         ip6-localnet
+ff00::0         ip6-mcastprefix
+ff02::1         ip6-allnodes
+ff02::2         ip6-allrouters
+ff02::3         ip6-allhosts