first cut - configuring firewall edgegateway service
posting xml to configure nat service
adding optional fields for nat and firewall service
configuring load balancer service
element type is not required , when href is provided
renamed service post method according to documentation
broke generator code into smaller methods
[vcloud_director] Add general queries handler.
[vcloud_director] Support fields,filter,format for packaged queries.
Merge pull request #2264 from nosborn/vcloud_director_queries

[vcloud_director] Improve query service support
moved method up in alphabetical order
using Camel case for edgegateway configuration
removed print statements added for debugging
Merge pull request #2260 from alphagov/configure_edge_gateway

[vcloud_director] Configure edge gateway services