[#63716032] Add delete method to Vapp objects
[#63716032] Fix utils/vcloud-vapp-delete, using Core::Vapp
Merge branch 'master' into vcloud-vapp-delete
[#63716032] Remove reference to vapp.delete prior to method rm
[#63716032] Remove vapp.delete and tests
Merge pull request #107 from alphagov/vcloud-vapp-delete

[#63716032] utils/vcloud-vapp-delete was broken