os-net-config ignore the interface VLAN on Red Hat

[Gonéri Le Bouder]

If os-net-config create an interface with a foo.xxx where xxx is a numerical value on Red Hat, it won't add the VLAN=yes parameter.
On Debian systems, the interface will be properly associated to the vlan, that's not the case on Red Hat.

A possible solution is to automatically add the VLAN=yes if the interface name match /\.[0-9]+$/.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/248246

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/248246
Committed: https://git.openstack.org/cgit/openstack/os-net-config/commit/?id=f00d545041b75b5d3e215bf435689e933dbb4f62
Submitter: Jenkins
Branch: master

commit f00d545041b75b5d3e215bf435689e933dbb4f62
Author: Gonéri Le Bouder <email address hidden>
Date: Fri Nov 20 15:56:37 2015 -0500

    ifcfg: add VLAN=yes when needed

    Add the VLAN=yes parameter if the interface name is in the foo.123 format.
    This is the behavior and Debian allow the same os-net-config configuration
    file to be consistent with Red Hat systems.

    See also: https://bugzilla.redhat.com/show_bug.cgi?id=1283812

    Change-Id: Iab2a4861e2231b34899c379963abbef59cf73328
    Closes-Bug: #1518449