get_spice_console should catch NotImplement exception and handle it

[jichenjc]

in v2/v3 API layer
def get_spice_console(self, req, id, body):

didn't catch NotImplement exception and handle it

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/72869

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/72869
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=f52a7f181ab8eb7b9e3e780183662fde8755cabd
Submitter: Jenkins
Branch: master

commit f52a7f181ab8eb7b9e3e780183662fde8755cabd
Author: jichenjc <email address hidden>
Date: Tue Jan 28 10:19:26 2014 +0800

    Catch NotImplementedError in get_spice_console in v2/v3 API

    Currently get_spice_console doesn't catch NotImpelementedError
    and it will lead to inaccurate information returned back
    to API caller. This patch adds the catch exception routine and
    returns a HTTPNotImplemented excpetion.

    Closes-Bug: #1279195
    Change-Id: I16cb0a83c0e1aa9a041dd21af324a39388ca3bb8