Fix neutron rootwrap

[xwang0818]

• Allow permission to for neutron-l3-agent to kill keepalived-state-change process
• Fix router/namespace deletion issue

[bbc-jenkins]

Can one of the admins verify this patch?

• \"ok to test\" to accept this pull request for testing
• \"test this please\" for a one time test run
• \"add to whitelist\" to add the author to the whitelist

[bbc-jenkins]

Can one of the admins verify this patch?

• \"ok to test\" to accept this pull request for testing
• \"test this please\" for a one time test run
• \"add to whitelist\" to add the author to the whitelist

[bbc-jenkins]

Can one of the admins verify this patch?

• \"ok to test\" to accept this pull request for testing
• \"test this please\" for a one time test run
• \"add to whitelist\" to add the author to the whitelist

[nirajdp76]

ok to test

[rcwong]

👍