Added explicit pidfile definintion in haproxy initscript.
Added explicit pidfile definintion in haproxy initscript.

aaronpederson/ansible-haproxy,colstrom/ansible-haproxy,aaronpederson/ansible-haproxy,telusdigital/ansible-haproxy,stevenharradine/ansible-haproxy,colstrom/ansible-haproxy,telusdigital/ansible-haproxy,stevenharradine/ansible-haproxy