Switch to using of oslo.db

oslo.db first stable release has been cut and we can start using it
instead of openstack/common/db/* code which is now marked obsolete.

Change-Id: I1ccf896922a5a762d37a1a3b93c56c8b8ae8c085

neutron/services/vpn/service_drivers/cisco_csr_db.py

@@ -14,6 +14,7 @@
 #
 # @author: Paul Michali, Cisco Systems, Inc.
 
+from oslo.db import exception as db_exc
 import sqlalchemy as sa
 from sqlalchemy.orm import exc as sql_exc
 
@@ -21,7 +22,6 @@ from neutron.common import exceptions
 from neutron.db import model_base
 from neutron.db import models_v2
 from neutron.db.vpn import vpn_db
-from neutron.openstack.common.db import exception as db_exc
 from neutron.openstack.common import log as logging
 
 LOG = logging.getLogger(__name__)

openstack-common.conf

@@ -2,8 +2,6 @@
 # The list of modules to copy from oslo-incubator.git
 module=cache
 module=context
-module=db
-module=db.sqlalchemy
 module=eventlet_backdoor
 module=excutils
 module=fileutils

requirements.txt

@@ -23,6 +23,7 @@ alembic>=0.4.1
 six>=1.7.0
 stevedore>=0.14
 oslo.config>=1.2.1
+oslo.db>=0.2.0
 oslo.messaging>=1.3.0
 oslo.rootwrap