Integration tests now only know about vCloud Core

Not about fog.

Also updates to depend on relevant version of vCloud Core.
Update gitignore to remove dev env specific stuff
Change references to `fog_vms`

This is now called `vms`.
Rename `fog_vm` variables to `vcloud_vm`

For consistency. The important point here is to distinguish the vm that you have retrieved, or retrieved a reference to, via the vCloud API, and the one you are creating. It is not important that fog is used for that.
Update to version of vCloud Core that has change
Merge pull request #60 from gds-operations/use-fogless-core

[#70162466] Use fogless core