No need to add "#!/usr/bin/env python" for all .py files under nova/cmd

[Guangya Liu]

Now in Havana, all nova service script start up logic are moved to nova/cmd and those files are not simply python script but python files, so there is no need to still keep "#!/usr/bin/env python" for those files, since they won't be run directly as scripts.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/28776

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/28776
Committed: http://github.com/openstack/nova/commit/3f4b8dfc4b9f1b2d6347676be5b3814575c6b5b9
Submitter: Jenkins
Branch: master

commit 3f4b8dfc4b9f1b2d6347676be5b3814575c6b5b9
Author: Jay Lau <email address hidden>
Date: Fri May 10 15:03:45 2013 +0800

    Remove "#!/usr/bin/env python" from .py files under nova/cmd

    Fix bug 1178543

    Now in Havana, all nova service script start up logic are moved to
    nova/cmd and those files are not simply python script but python
    files, so there is no need to still keep "#!/usr/bin/env python"
    for those files since they won't be run directly as scripts.

    Change-Id: Ic102215dc0200ec1f6b47951bef31d58b08022ef