Description of problem:

"root.conf.helper" has been replaced by "get_root_helper" with the following change:

https://review.openstack.org/gitweb?p=openstack/quantum.git;a=commit;h=1b7565b83ca8ef9761cdfb1eed1e9eb9498ea340

But there remains a few root.conf.helper in the following codes.

- agent/linux/interface.py
- agent/dhcp_agent.py
- agent/l3_agent.py

As a result, some agents fails to start becuase /usr/bin/quantum-rootwrap is not used. For example, I found the following errors in my setup.

dhcp-agent.log
-------------------
RuntimeError:
Command: ['sudo', 'ip', 'netns', 'exec', 'qdhcp-0f37af2c-67fb-4870-a5d5-aec4f1d9568c', 'quantum-ns-metadata-proxy', '--pid_file=/var/lib/quantum/external/pids/0f37af2c-67fb-4870-a5d5-aec4f1d9568c.pid', '--network_id=0f37af2c-67fb-4870-a5d5-aec4f1d9568c', '--state_path=/var/lib/quantum', '--metadata_port=80', '--verbose', '--log-file=quantum-ns-metadata-proxy0f37af2c-67fb-4870-a5d5-aec4f1d9568c.log', '--log-dir=/var/log/quantum']
Exit code: 1
Stdout: ''
Stderr: 'sudo: no tty present and no askpass program specified\n'
-------------------

/var/log/secure
-------------------
Jun  6 17:25:12 rdodemo01 sudo:  quantum : command not allowed ; TTY=unknown ; PWD=/ ; USER=root ; COMMAND=/sbin/ip netns exec qdhcp-0f37af2c-67fb-4870-a5d5-aec4f1d9568c quantum-ns-metadata-proxy --pid_file=/var/lib/quantum/external/pids/0f37af2c-67fb-4870-a5d5-aec4f1d9568c.pid --network_id=0f37af2c-67fb-4870-a5d5-aec4f1d9568c --state_path=/var/lib/quantum --metadata_port=80 --verbose --log-file=quantum-ns-metadata-proxy0f37af2c-67fb-4870-a5d5-aec4f1d9568c.log --log-dir=/var/log/quantum
-------------------


Version-Release number of selected component (if applicable):

# rpm -qa | grep quantum
openstack-quantum-openvswitch-2013.1.1-6.el6.noarch
openstack-quantum-2013.1.1-6.el6.noarch
python-quantumclient-2.2.1-2.el6.noarch
python-quantum-2013.1.1-6.el6.noarch


Additional info:

I will attach three patches. See the next comment.

By the way, the following problem is cuased by the same reason.

https://bugs.launchpad.net/quantum/+bug/1182616