Use url_checker as binary call instead of library

[Vladimir Kozhukalov]

Fuelmenu should use url checker as a binary call

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.openstack.org/260577

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/260578

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/260577
Committed: https://git.openstack.org/cgit/openstack/network-checker/commit/?id=917c7fe8166ca9923b05a7e40ff251ad39ce33cc
Submitter: Jenkins
Branch: master

commit 917c7fe8166ca9923b05a7e40ff251ad39ce33cc
Author: Vladimir Kozhukalov <email address hidden>
Date: Tue Dec 22 17:55:33 2015 +0300

    Add proxies to url checker cli

    Change-Id: I7cb455edc905ade90f1754e264c2b045b0c446f5
    Related-Bug: #1528599

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/260578
Committed: https://git.openstack.org/cgit/openstack/fuel-menu/commit/?id=ddbe5faf593550abae21d2758b3d210201df680b
Submitter: Jenkins
Branch: master

commit ddbe5faf593550abae21d2758b3d210201df680b
Author: Vladimir Kozhukalov <email address hidden>
Date: Tue Dec 22 17:40:15 2015 +0300

    Use url checker cli instead of importing it

    Depends-On: I7cb455edc905ade90f1754e264c2b045b0c446f5
    Closes-Bug: #1528599
    Change-Id: I2b416a64d79f7217db2f4fdfd1b556d090edd567