Multiple constants define linux interface maximum length

[Cedric Brandily]

Multiple constants define linux interface maximum length (15):
* neutron.agent.linux.utils: DEVICE_NAME_LEN in get_interface_mac (=15)
* neutron.agent.linux.ip_lib: VETH_MAX_NAME_LENGTH (=15)
* neutron.plugins.common.constants: MAX_DEV_NAME_LEN (=16 incorrect value)

They should be replaced by a unique constant equals to 15 to ensure consistency.

[Cedric Brandily (cbrandily)]

Associated review: https://review.openstack.org/101567

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/101567
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=e299349b3be240d799822daedfa2730fd96839d3
Submitter: Jenkins
Branch: master

commit e299349b3be240d799822daedfa2730fd96839d3
Author: Cedric Brandily <email address hidden>
Date: Fri Jun 20 16:41:22 2014 +0200

    Merge multiple constants defining linux interface maximum length

    DEVICE_NAME_MAX_LEN constant in neutron.common.constants replaces
    and correct multiple constants defining linux interface maximum
    length.

    Closes-Bug: #1332571
    Change-Id: I63f760a21e17dcd57b3685b1e71c913d2722e097