roles/rhel-network: Enable/start service

The *networking* service, which is actually a legacy init script, is
provided by the *initscripts* package on RHEL and its derivatives. This
service needs to be running in order for the configuration generated by
the *rhel-network* role to be applied to the managed node.

roles/rhel-network/tasks/main.yml

@@ -1,3 +1,10 @@
+- name: ensure initscripts package is installed
+  package:
+    name=initscripts
+    state=present
+  tags:
+  - install
+
 - name: ensure network devices are configured
   template:
     src=ifcfg.j2
@@ -11,3 +18,13 @@
     path=/etc/sysconfig/network-scripts/ifcfg-{{ item }}
     state=absent
   with_items: '{{ network.ignore_interfaces|d(()) }}'
+
+- name: ensure network starts at boot
+  service:
+    name=network
+    enabled=yes
+- meta: flush_handlers
+- name: ensure network is started
+  service:
+    name=network
+    state=started