Currently the ovs-dpdkctl.sh file is present in the tools
directory and the "Copying ovs-dpdkctl tool" task accesses it.

This is bad practice. Files copied from a role should either be
referenced by an absolute path or be part of the role itself.

This change moves the ovs-dpdkctl.sh file in the files
directory of the role.

Change-Id: I01459d39207e54f270f32f37b4a5153c5a819347