[vbox] [cygwin] sudo and dumpkeys are missing

[Vasiliy Pleshakov]

Fuel Virtualbox scripts run sudo and dumpkeys on certain condition:
https://github.com/openstack/fuel-main/blob/master/virtualbox/functions/translate.sh#L21-L23

Unfortunately there is no dumpkeys and sudo at Cygwin.

I sugest to move this lines into prepare-environment.sh and wrap it into 'case "$(uname)"' http://paste.openstack.org/show/487399/

[Maksim Malchuk (mmalchuk)]

Importance changed to Low because dumpkeys and sudo needed only if dumpkeys.cache file deleted.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/285673

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/285673
Committed: https://git.openstack.org/cgit/openstack/fuel-virtualbox/commit/?id=74374b316c414c971aaab9d9ae72c26aec52a6b8
Submitter: Jenkins
Branch: master

commit 74374b316c414c971aaab9d9ae72c26aec52a6b8
Author: Maksim Malchuk <email address hidden>
Date: Sat Feb 27 15:28:57 2016 +0300

    Add checks for the file 'dumpkeys.cache'

    This commit adds check for the file 'dumpkeys.cache' because it
    should be exist in the main directory and in some cases it can't
    be recreated. Also, this commit contains some enchancements for
    all other checks and for the functions/*.sh modules.

    Change-Id: Iaa55921709e0575e924af042f4322b759847d097
    Closes-Bug: #1547019