Version aliases not updated for Icehouse

[Mohammed Naser]

With the release of Icehouse, the RPC APIs were not updated for their version aliases.

[Matt Riedemann (mriedem)]

Related to bug 1309324.

[Openstack Gerrit (openstack-gerrit)]

Reviewed: https://review.openstack.org/88494
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=27962a897c4b77fcb912d5bdd349f14d0a21b011
Submitter: Jenkins
Branch: master

commit 27962a897c4b77fcb912d5bdd349f14d0a21b011
Author: Mohammed Naser <email address hidden>
Date: Fri Apr 18 04:33:14 2014 +0000

    Update version aliases for rpc version control

    Now that Icehouse has been branched, add aliases for the rpc version
    implemented by Icehouse. These aliases can be used in the
    configuration options for doing outbound rpc version control.

    DocImpact - 'icehouse' is now a valid value to provide to all of the
    options in the [upgrade_levels] section of nova.conf.

    Closes-Bug: #1309334
    Partial-Bug: #1309324
    Change-Id: Iad96d8ba7e8e85346fe0b3275f220314bf76a7e3