Comment 1 for bug 1712327

https://github.com/Juniper/contrail-server-manager/commit/8f02d2967862a9eb99b87add0e063d31c813e95c#diff-a433bfdf94970c6f00344b4d6a8726dd remove import of shutil module.

Work-around:
add following lines to /opt/contrail/server_manager/ansible/sm_ansible_utils.py at line 9.

import shutil