Move docker specific options into a group.

[OpenStack Infra]

https://review.openstack.org/55607
commit c262de4417d48be599c3a7496ef94de5c84b188c
Author: Michael Still <email address hidden>
Date: Fri Nov 8 13:12:56 2013 +1100

    Move docker specific options into a group.

    There is only one example, but we're moving all hypervisor specific
    options into groups.

    DocImpact: rename docker_registry_default_port to
    registry_default_port in the docker group.

    Implements blueprint: docker-opts-group

    Change-Id: Ic653e8a610876c40a715bff1ec48173d3bdb212e

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/57827

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/57827
Committed: http://github.com/openstack/openstack-manuals/commit/5b787bdbb85fb04ced0b5081b086be2560aa4396
Submitter: Jenkins
Branch: master

commit 5b787bdbb85fb04ced0b5081b086be2560aa4396
Author: Stephen Gordon <email address hidden>
Date: Thu Nov 21 23:56:52 2013 -0500

    Renamed docker_registry_default_port flag

    The docker_registry_default_port flag has been renamed
    registry_default_port to reflect that namespacing is
    already provided via the context of the "docker" group
    that it appears in.

    Change-Id: Ia26f747a67b36fb96f72d3cc98016342e124b152
    Closes-Bug: #1249441

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-manuals 15.0.0 release.