Revert "loadbalancer: use TCP checks for Spice"

This patch breaks HAproxy to start:
[ALERT] 230/085911 (53231) : parsing [/etc/haproxy/haproxy.cfg:235] :
'http-check' only supports 'disable-on-404', 'send-state', 'expect'.

This reverts commit 755851c93889b92e10a9dbddc6f591a7bc6ec01a.

manifests/loadbalancer.pp

@@ -373,13 +373,11 @@ class cloud::loadbalancer(
     port               => $spice_port,
     options            => {
       'balance'        => 'leastconn',
-      'mode'           => 'tcp',
-      'option'         => ['tcpka', 'forwardfor', 'tcplog',],
-      'http-check'     => '',
       'timeout server' => '120m',
       'timeout client' => '120m',
     },
     bind_options       => $spice_bind_options,
+    httpchk            => 'httpchk GET /';
   }
   cloud::loadbalancer::binding { 'trove_api_cluster':
     ip           => $trove_api,

spec/classes/cloud_loadbalancer_spec.rb

@@ -209,10 +209,10 @@ describe 'cloud::loadbalancer' do
         :ipaddress => [params[:vip_public_ip]],
         :ports     => '6082',
         :options   => {
-          'mode'           => 'tcp',
-          'option'         => ['tcpka', 'forwardfor', 'tcplog'],
+          'mode'           => 'http',
+          'option'         => ['tcpka', 'forwardfor', 'tcplog','httpchk GET /'],
+          'http-check'     => 'expect ! rstatus ^5',
           'balance'        => 'leastconn',
-          'http-check'     => '',
           'timeout server' => '120m',
           'timeout client' => '120m'
         }