loadBalancerConfig.xml schema is missing attributes

The following is missing from the loadBalancerConfig.xml schema.

```
<vendorProfile>
    <vendorTemplateId></vendorTemplateId>
    <vendorTemplateName></vendorTemplateName>
    <profileAttributes>      
        <attribute>
            <name></name>
            <key></key>
            <value></value>
        </attribute>
    </profileAttributes>
</vendorProfile>
```
