* test(backend): start of volatile clones on remote

Volatile clones must be started on creation. Check it works:
- base has: volatile_clones enabled
- user is temporary

issue #865

* refactor(frontend): removed old call

* refactor(backend): moved balance vm code to VM

Also, make sure the VM is balanced on clones

issue #865

* refactor(backend): pass request to sync to issue messages

issue #865

* test(backend): allow mock VMs to add volumes

issue #865

* wip(backend): run clone volumes in remote too

issue #865

* feat(backend): balance VMs before creation if volatile

fixes issue #865

* test(nodes): machine can be created on remote now

* wip(backend): balance VM for volatiles before creation

issue #865

* wip(nodes): do not use disabled nodes

issue #865

* wip(nodes): do not check bad shutdown on volatiles

issue #865

* wip(nodes): allow volumes on remote nodes

issue #865

* test(nodes): clean failed tests

issue #865