Updated from generate-devstack-plugins-list

Change-Id: If7c8f6162d3e846a360cc7f34ce2ebf52054f45f
diff --git a/doc/source/plugin-registry.rst b/doc/source/plugin-registry.rst
index 5f796ae..2760f85 100644
--- a/doc/source/plugin-registry.rst
+++ b/doc/source/plugin-registry.rst
@@ -61,6 +61,7 @@
 gce-api                                `git://git.openstack.org/openstack/gce-api <https://git.openstack.org/cgit/openstack/gce-api>`__
 gnocchi                                `git://git.openstack.org/openstack/gnocchi <https://git.openstack.org/cgit/openstack/gnocchi>`__
 group-based-policy                     `git://git.openstack.org/openstack/group-based-policy <https://git.openstack.org/cgit/openstack/group-based-policy>`__
+higgins                                `git://git.openstack.org/openstack/higgins <https://git.openstack.org/cgit/openstack/higgins>`__
 ironic                                 `git://git.openstack.org/openstack/ironic <https://git.openstack.org/cgit/openstack/ironic>`__
 ironic-inspector                       `git://git.openstack.org/openstack/ironic-inspector <https://git.openstack.org/cgit/openstack/ironic-inspector>`__
 kingbird                               `git://git.openstack.org/openstack/kingbird <https://git.openstack.org/cgit/openstack/kingbird>`__
@@ -70,6 +71,7 @@
 manila                                 `git://git.openstack.org/openstack/manila <https://git.openstack.org/cgit/openstack/manila>`__
 mistral                                `git://git.openstack.org/openstack/mistral <https://git.openstack.org/cgit/openstack/mistral>`__
 monasca-api                            `git://git.openstack.org/openstack/monasca-api <https://git.openstack.org/cgit/openstack/monasca-api>`__
+monasca-ceilometer                     `git://git.openstack.org/openstack/monasca-ceilometer <https://git.openstack.org/cgit/openstack/monasca-ceilometer>`__
 monasca-log-api                        `git://git.openstack.org/openstack/monasca-log-api <https://git.openstack.org/cgit/openstack/monasca-log-api>`__
 monasca-transform                      `git://git.openstack.org/openstack/monasca-transform <https://git.openstack.org/cgit/openstack/monasca-transform>`__
 murano                                 `git://git.openstack.org/openstack/murano <https://git.openstack.org/cgit/openstack/murano>`__