manila: Add newline at the end of the sudoers file
manila: Add newline at the end of the sudoers file

Otherwise, sudo complains about wrong syntax:

Change-Id: I061610c50ab7fab0e0551f2fb9e4c749bd9840b3
sudo: parse error in /etc/sudoers.d/openstack-manila near line 2

openstack/rpm-packaging,openstack/rpm-packaging