dhcp_options_enabled option be removed when neutron supports

[dkehn]

The dhcp_options_enabled is currently set to False because the neutron extra_dhcp_opts patches have not landed yet. This should land in the Havana release of Neutron, as such dhcp_options_enabled option can then be defaulted to True or the conditional in the code can be removed (the desired approach). This is explained in https://review.openstack.org/#/c/31061/, and in Neutron: https://review.openstack.org/#/c/30441/ and https://review.openstack.org/#/c/30447/, for the python-neutronclient. So for Icehouse release of Nova this option should be removed and the code modified to support the dhcp_options.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/58089

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/58089
Committed: http://github.com/openstack/nova/commit/3292103d80676fc789615465759de966dba4e9f7
Submitter: Jenkins
Branch: master

commit 3292103d80676fc789615465759de966dba4e9f7
Author: Rohan Kanade <email address hidden>
Date: Sat Nov 23 07:44:28 2013 +0100

    Removes check CONF.dhcp_options_enabled from nova

    * Neutron supports extra_dhcp_opts since Havana
    * Hence remove boolean check dhcp_options_enabled

    Closes-Bug: #1214162
    DocImpact
    Change-Id: I9af217a87a237e078e70332cbed1c80ad4d5db0a