Document db_auto_create in default config files

Change-Id: I933952b672254b32928762e0a4beba2b2b107810

doc/source/configuring.rst

@@ -170,6 +170,13 @@ prevent any new processes from being created.
 
 Optional. Default: ``1``
 
+* ``db_auto_create=False``
+
+Whether to automatically create the database tables.  Otherwise you can
+manually run `glance-manage db_sync`.
+
+Optional. Default: ``False``
+
 Configurating SSL Support
 ~~~~~~~~~~~~~~~~~~~~~~~~~
 

etc/glance-api.conf

@@ -149,6 +149,10 @@ registry_client_protocol = http
 # Default: 600
 #registry_client_timeout = 600
 
+# Whether to automatically create the database tables.
+# Default: False
+#db_auto_create = False
+
 # ============ Notification System Options =====================
 
 # Notifications can be sent when images are create, updated or deleted.

etc/glance-registry.conf

@@ -47,6 +47,10 @@ limit_param_default = 25
 # Role used to identify an authenticated user as administrator
 #admin_role = admin
 
+# Whether to automatically create the database tables.
+# Default: False
+#db_auto_create = False
+
 # ================= Syslog Options ============================
 
 # Send logs to syslog (/dev/log) instead of to file specified