Add a hook to load glance_store options

The backends configuration options are now in the glance_store package
and are loaded at runtime. This patch adds a hook that calls a
glance_store function to load the options.

Change-Id: Iefd49afd578f2b5fa9318d8ed8fb9f7a76d8ba34

autogenerate_config_docs/hooks.py

@@ -24,4 +24,12 @@ def keystone_config():
     config.configure()
 
 
-HOOKS = {'keystone.common.config': keystone_config}
+def glance_store_config():
+    import glance_store
+    from oslo.config import cfg
+
+    glance_store.backend.register_opts(cfg.CONF)
+
+
+HOOKS = {'keystone.common.config': keystone_config,
+         'glance.common.config': glance_store_config}