Why is my Cloudformation script not starting apache?

I'm trying to create an instance to run apache, and everything seems to be working, but the web server is not being started.

It starts up fine manually. If I reboot the instance, it does not automatically start the web server.

My Resources section contains:

"Resources" : {
  "CfnUser" : {
    "Type" : "AWS::IAM::User",
    "Properties" : {
      "Path": "/",
      "Policies": [{
        "PolicyName": "root",
        "PolicyDocument": { "Statement":[{
          "Effect":"Allow",
          "Action":"cloudformation:DescribeStackResource",
          "Resource":"*"
        }]}
      }]
    }
  },

  "HostKeys" : {
    "Type" : "AWS::IAM::AccessKey",
    "Properties" : {
      "UserName" : {"Ref": "CfnUser"}
    }
  },

  "testInstance" : {
    "Type" : "AWS::EC2::Instance",
    "Metadata" : {
        "Comment1" : "Just testing",
        "AWS::CloudFormation::Init" : {
          "config" : {
              "packages" : {
                  "yum" : {
                      "mysql"        : [],
                      "mysql-server" : [],
                      "mysql-libs"   : [],
                      "httpd24"      : [],
                      "php54"        : [],
                      "php54-common" : [],
                      "php54-mysql"  : [],
                      "php54-pdo"    : [],
                      "php54-xml"    : [],
                      "php54-mcrypt" : [],
                      "php54-gd"     : []
                  }
              }
          },

          "services" : {
              "sysvinit" : {
                  "httpd"    : { "enabled" : "true", "ensureRunning" : "true" },
                  "mysqld"   : { "enabled" : "true", "ensureRunning" : "true" }
              }
          }

      }
  },

  "Properties" : {
    "ImageId" : { "Fn::FindInMap" : [ "RegionMap", { "Ref" : "AWS::Region" }, "64"] },
    "InstanceType"   : { "Ref" : "InstanceType" },
    "SecurityGroups" : [ {"Ref" : "StackWebAccess"} ],
    "KeyName"        : { "Ref" : "KeyName" },

    "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
      "#!/bin/bash -v\n",
      "yum update -y aws-cfn-bootstrap\n",
      "# Install LAMP packages\n",
      "/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackName" }, " -r testInstance ",
      "    --access-key ",  { "Ref" : "HostKeys" },
      "    --secret-key ", {"Fn::GetAtt": ["HostKeys", "SecretAccessKey"]},
      "    --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n"
        ] ] } }        
  }
},

"StackWebAccess" : {
  "Type" : "AWS::EC2::SecurityGroup",
  "Properties" : {
    "GroupDescription" : "Enable SSH access and HTTP access on the inbound port",
    "SecurityGroupIngress" : [ 
      {
        "IpProtocol" : "tcp",
        "FromPort" : "22",
        "ToPort" : "22",
        "CidrIp" : "0.0.0.0/0"
      },
      {
        "IpProtocol" : "tcp",
        "FromPort" : "80",
        "ToPort" : "80",
        "CidrIp" : "0.0.0.0/0"
      }
    ]
  }
  }
},

My cfn-init.log:

2013-01-23 13:55:58,064 [INFO] Running configSets: default
2013-01-23 13:55:58,065 [INFO] Running configSet default
2013-01-23 13:55:58,065 [INFO] Running config config
2013-01-23 13:57:23,097 [INFO] Yum installed [u'php54-common', u'php54-xml', u'php54', u'httpd24', u'php54-gd', u'mysql-server', u'php54-mcrypt', u'mysql-libs', u'php54-mysql', u'php54-pdo', u'mysql']
2013-01-23 13:57:23,102 [INFO] ConfigSets completed

Is there something missing, or should this be starting the services?