Merge pull request #933 from kmcgrath/master

AWS Linux aware haproxy-marathon-bridge

bin/haproxy-marathon-bridge

@@ -55,8 +55,16 @@ function refresh_system_haproxy {
 }
 
 function install_haproxy_system {
-  os=$(lsb_release -si)
-  if [[ $os == "CentOS" ]] || [[ $os == "RHEL" ]]
+
+  if hash lsb_release 2>/dev/null
+  then
+    os=$(lsb_release -si)
+  elif [ -e "/etc/system-release" ] && (grep -q "Amazon Linux AMI" "/etc/system-release")
+  then
+    os="AmazonAMI"
+  fi
+
+  if [[ $os == "CentOS" ]] || [[ $os == "RHEL" ]] || [[ $os == "AmazonAMI" ]]
   then
     sudo yum install -y haproxy
     sudo chkconfig haproxy on