Change in vdsm[master]: vm: Add or remove a lease when a VM is running

[Code Review]

From Dan Kenigsberg :

Dan Kenigsberg has submitted this change and it was merged.

Change subject: vm: Add or remove a lease when a VM is running
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vm: Add or remove a lease when a VM is running

Add the capability to plug or unplug a lease while a VM is running. This
will be used to move the lease to another domain if the current domain
need to be put in maintenance.

I stole the vm property from https://gerrit.ovirt.org/61475 since it is
too late to backport it to 4.1, and I fell too dirty to copy and paste
the vm fetching code in the new verbs.

Change-Id: Id791c848ab5813b19da0ae45172af89497ba580b
Bug-Url: https://bugzilla.redhat.com/1408825
Signed-off-by: Nir Soffer 
---
M lib/api/vdsm-api.yml
M lib/vdsm/common/exception.py
M lib/vdsm/rpc/Bridge.py
M vdsm/API.py
M vdsm/virt/vm.py
5 files changed, 123 insertions(+), 0 deletions(-)

Approvals:
  Nir Soffer: Verified; Passed CI tests
  Dan Kenigsberg: Looks good to me, approved

Objections:
  Jenkins CI: Failed CI tests