Hard-coded interface names (ethX) is using in fuel-main code

[Albert Syriy]

The hard-coded interface names are using in fuel-main code (like eth0, eth1, ... etc).
Actually interface name could be a different from ethX and different naming schema could be used.
CentOS 7.0 using the new naming network interface schema.

==== Start quotation ====
Traditionally, network interfaces in Linux are enumerated as eth[0123…], but these names do not necessarily correspond to actual labels on the chassis. Modern server platforms with multiple network adapters can encounter non-deterministic and counter-intuitive naming of these interfaces. This affects both network adapters embedded on the motherboard (Lan-on-Motherboard, or LOM) and add-in (single and multiport) adapters.

By default, systemd will name interfaces using the following policy to apply the supported naming schemes:
Scheme 1: Names incorporating Firmware or BIOS provided index numbers for on-board devices (example: eno1), are applied if that information from the firmware or BIOS is applicable and available, else falling back to scheme 2.
Scheme 2: Names incorporating Firmware or BIOS provided PCI Express hotplug slot index numbers (example: ens1) are applied if that information from the firmware or BIOS is applicable and available, else falling back to scheme 3.
Scheme 3: Names incorporating physical location of the connector of the hardware (example: enp2s0), are applied if applicable, else falling directly back to scheme 5 in all other cases.
Scheme 4: Names incorporating interface's MAC address (example: enx78e7d1ea46da), is not used by default, but is available if the user chooses.
Scheme 5: The traditional unpredictable kernel naming scheme, is used if all other methods fail (example: eth0).
======= End quotation =============

The hard-coding name schema should be changed in fuel-main taking into account the information above.
The file with hard-coded network interfaces names in fuel-main is attached.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/223939

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/223939
Committed: https://git.openstack.org/cgit/stackforge/fuel-main/commit/?id=cef6b199418c44f1e1f8899fcc9667f50fda8b15
Submitter: Jenkins
Branch: master

commit cef6b199418c44f1e1f8899fcc9667f50fda8b15
Author: Albert <email address hidden>
Date: Tue Sep 15 18:57:54 2015 +0300

    Ethernet interfaces may not be named as ethX

    Change-Id: If25043c622a5753d2cb46c1081f7cb78554be6a4
    Closes-bug: #1494223

[Albert Syriy (asyriy)]

The commit was a small piece of code in fuel-main, but other components are still required to be fixed.

[Alexandr Kostrikov (akostrikov-mirantis)]

We are deploying predictable interface naming schema with fuel-qa and so far have not found any bugs with it.