Add additional parameters to http_check (DataDog#599)

Add the check_hostname and ssl_server_name parameters
to the http_check integration

Author: asenci

manifests/integrations/http_check.pp

@@ -185,6 +185,8 @@
   $check_certificate_expiration = true,
   $days_warning = undef,
   $days_critical = undef,
+  Optional[Boolean] $check_hostname = undef,
+  Optional[String] $ssl_server_name = undef,
   $headers   = [],
   $allow_redirects = true,
   $tags      = [],
@@ -217,6 +219,8 @@
       'check_certificate_expiration' => $check_certificate_expiration,
       'days_warning'                 => $days_warning,
       'days_critical'                => $days_critical,
+      'check_hostname'               => $check_hostname,
+      'ssl_server_name'              => $ssl_server_name,
       'headers'                      => $headers,
       'allow_redirects'              => $allow_redirects,
       'tags'                         => $tags,

templates/agent-conf.d/http_check.yaml.erb

@@ -71,6 +71,12 @@ instances:
 <% if instance['days_critical'] -%>
     days_critical: <%= instance['days_critical'] %>
 <% end -%>
+<% if instance['check_hostname'] -%>
+    check_hostname: <%= instance['check_hostname'] %>
+<% end -%>
+<% if instance['ssl_server_name'] -%>
+    ssl_server_name: <%= instance['ssl_server_name'] %>
+<% end -%>
 <% end -%>
 <% end -%>
 <% if instance['headers'] and ! instance['headers'].empty? -%>