"Could not evaluate: undefined method `uniq' for nil:NilClass" while creating patch with specified mtu via l23network for puppet

[Maksym Strukov]

Env:
Ubuntu 14.04
Puppet v3.4.3
Fuel-library a478b8c

I can succesfully create patch between two bridges, but got error if mtu value provied:

Error: /Stage[main]/Main/L23network::L2::Patch[ovslnx_patch]/L2_patch[patch__br0--br1]: Could not evaluate: undefined method `uniq' for nil:NilClass

Steps and actual result here: http://paste.openstack.org/show/191890/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/165249

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/165249
Committed: https://git.openstack.org/cgit/stackforge/fuel-library/commit/?id=69d96ec685f87eb809c38da5679d1ab6c390afbc
Submitter: Jenkins
Branch: master

commit 69d96ec685f87eb809c38da5679d1ab6c390afbc
Author: Sergey Vasilenko <email address hidden>
Date: Wed Mar 18 02:31:22 2015 +0300

    FIX: undefined method `uniq' for nil:NilClass" while creating patch

    Change-Id: I0589add3b0fd6f856882aae464dc084e4f7d9d72
    Closes-bug: #1431509

[Vladimir Sharshov (vsharshov)]

Guys, looks like this bug has been reproduced again: https://bugs.launchpad.net/fuel/+bug/1454278

[Maksym Strukov (unbelll)]

Verified as fixed (fuel-lib d7128c27a1)