Comment 4 for bug 1081287

Reviewed: https://review.openstack.org/16977
Committed: http://github.com/openstack/nova/commit/47ddb8ca76fba11a6e77b12e9eeb61b5a9c78c48
Submitter: Jenkins
Branch: master

commit 47ddb8ca76fba11a6e77b12e9eeb61b5a9c78c48
Author: Dan Prince <email address hidden>
Date: Tue Nov 27 10:28:01 2012 -0500

    Validate rxtx_factor as a float.

    Updates the rxtx_factor validations in the instance_types modules so
    that rxtx_factor is validated as a float. Given that rxtx_factor is stored
    as a float in the database this makes sense... and also adheres
    to some of the extension documentation as well (although some of
    the extension docs were incorrect as well).

    Previously rxtx_factor was being cast into an int which caused it to
    be stored and displayed incorrectly via the API.

    This patchset adds a test which fails with the old code.

    Additionally some of the API docs are corrected so that rxtx_factor is
    listed as a float in all examples.

    Fixes LP Bug #1081287.

    Change-Id: Iae98522a1f2ed63cbd2497b0b0af5ac2d9bb935c