Increase the verbosity of haproxy.rest_api_driver failures
Increase the verbosity of haproxy.rest_api_driver failures

Otherwise it's impossible to identify what's the cause of the
failure (connection, timeout, certificate, etc..).

Change-Id: Ia4eda232b1d3ee5e9f7c2958a4857e155230affb
Closes-Bug: 1633427

openstack/octavia,openstack/octavia,openstack/octavia