Move Sahara into in-tree plugin

Once the Sahara related code moved to Sahara repo and used, we can
remove Sahara specific code from Devstack.

Partial-Implements: bp sahara-devstack-intree

Change-Id: I34412b5cb2e86944b8555b8fd04b43556eb2bbe6
Depends-on: I2e00b2ebc59dd3be6a0539dea2985f2e801a1bd7
Depends-on: I07c3fede473030e8a110cbf5a08309f890905abf
diff --git a/doc/source/plugin-registry.rst b/doc/source/plugin-registry.rst
index 2dd70d8..c5c4e1e 100644
--- a/doc/source/plugin-registry.rst
+++ b/doc/source/plugin-registry.rst
@@ -22,6 +22,8 @@
 +--------------------+-------------------------------------------+--------------------+
 |magnum              |git://git.openstack.org/openstack/magnum   |                    |
 +--------------------+-------------------------------------------+--------------------+
+|sahara              |git://git.openstack.org/openstack/sahara   |                    |
++--------------------+-------------------------------------------+--------------------+
 |trove               |git://git.openstack.org/openstack/trove    |                    |
 +--------------------+-------------------------------------------+--------------------+
 |zaqar               |git://git.openstack.org/openstack/zarar    |                    |