Change in vdsm[master]: sampling: rename VMBulkSampler

[Code Review]

From Dan Kenigsberg :

Dan Kenigsberg has submitted this change and it was merged.

Change subject: sampling: rename VMBulkSampler
......................................................................

sampling: rename VMBulkSampler

Rename to `VMBulkstatsMonitor` because is a bit nicer and
more consistent with the rest of the periodic operations.

No changes in behaviour.

Change-Id: I029727100d7418e237bcedfad942ed28b44f933a
Signed-off-by: Francesco Romani 
---
M lib/vdsm/virt/periodic.py
M lib/vdsm/virt/sampling.py
M tests/virttests/bulk_sampling_test.py
3 files changed, 9 insertions(+), 9 deletions(-)

Approvals:
  Jenkins CI: Passed CI tests
  Dan Kenigsberg: Looks good to me, approved
  Francesco Romani: Verified