devstack-plugins-list: skip openstack/openstack

The proposal job to update the plugin list has been failing for a long
time as it gets a 500 error from gitea on the openstack/openstack
repo.  This is an odd "superrepo" with all projects as submodules;
thus openstack/openstack/devstack is actually a project, not the
directory with a plugin in it.

Skip this repo (gitea shouldn't return a 500, but that's another
thing...)

Regenerate the list manually for this run.

Change-Id: I6ed65bcb720d4cb10702cbf66106120e001ec35f
diff --git a/doc/source/plugin-registry.rst b/doc/source/plugin-registry.rst
index 5cbe4ed..904400e 100644
--- a/doc/source/plugin-registry.rst
+++ b/doc/source/plugin-registry.rst
@@ -147,7 +147,6 @@
 x/devstack-plugin-libvirt-qemu           `https://opendev.org/x/devstack-plugin-libvirt-qemu <https://opendev.org/x/devstack-plugin-libvirt-qemu>`__
 x/devstack-plugin-mariadb                `https://opendev.org/x/devstack-plugin-mariadb <https://opendev.org/x/devstack-plugin-mariadb>`__
 x/devstack-plugin-nfs                    `https://opendev.org/x/devstack-plugin-nfs <https://opendev.org/x/devstack-plugin-nfs>`__
-x/devstack-plugin-sheepdog               `https://opendev.org/x/devstack-plugin-sheepdog <https://opendev.org/x/devstack-plugin-sheepdog>`__
 x/devstack-plugin-vmax                   `https://opendev.org/x/devstack-plugin-vmax <https://opendev.org/x/devstack-plugin-vmax>`__
 x/drbd-devstack                          `https://opendev.org/x/drbd-devstack <https://opendev.org/x/drbd-devstack>`__
 x/fenix                                  `https://opendev.org/x/fenix <https://opendev.org/x/fenix>`__
@@ -203,6 +202,7 @@
 x/valet                                  `https://opendev.org/x/valet <https://opendev.org/x/valet>`__
 x/vmware-nsx                             `https://opendev.org/x/vmware-nsx <https://opendev.org/x/vmware-nsx>`__
 x/vmware-vspc                            `https://opendev.org/x/vmware-vspc <https://opendev.org/x/vmware-vspc>`__
+x/whitebox-tempest-plugin                `https://opendev.org/x/whitebox-tempest-plugin <https://opendev.org/x/whitebox-tempest-plugin>`__
 ======================================== ===