Add custom_fields support to vcloud_director
Fix typo
Add custom_fields to vapp, remove debug info
Add couple of functions and tests
Rename method to put_product_sections and update it's documentation
Add custom_fields support to vcloud_director
Fix typo
Add custom_fields to vapp, remove debug info
Add couple of functions and tests
Rename method to put_product_sections and update it's documentation
Merge branch 'vcloud_director_custom_fields' of https://github.com/geriBatai/fog into vcloud_director_custom_fields

Conflicts:
	tests/vcloud_director/requests/compute/vapp_tests.rb
Merge pull request #2930 from geriBatai/vcloud_director_custom_fields

[vcloud_director] Add support for custom fields in vapp