(PCP-129) Update to leatherman eb19f8b8b
(PCP-129) Update to leatherman eb19f8b8b

Updating leatherman to access the new execution::execute() overloads
that allow to process the child PID and write output to file (LTH-55).

puppetlabs/pxp-agent,puppetlabs/pxp-agent,puppetlabs/pxp-agent