Create function show_poller

[tmonteyne]

Function for request which poller by hostname

curl -s -k -H centreon-auth-token:$TOKEN= -H Content-Type:application/json -d '{"action":"show_poller","object":"host","values":"hostname"}' 'https://serveurcentreon/centreon/api/index.php?action=action&object=centreon_clapi'