Close-Bug: #1395949. This fix is required for https://bugs.launchpad.net/juniperopenstack/+bug/1395949. Provision contrail_sudoers with the security approved commands to control lifecycle of the contrail user processes. Any updates to this file needs to have approval from TL and core reviewer for contrail-config-api

Change-Id: I6b81e94d05474040e88ffab6f5a12d8b16f483bb