Change in vdsm[master]: tests: Skip root only tests using pytest

[Code Review]

From Dan Kenigsberg :

Dan Kenigsberg has submitted this change and it was merged. ( https://gerrit.ovirt.org/78634 )

Change subject: tests: Skip root only tests using pytest
......................................................................

tests: Skip root only tests using pytest

Replace @ValidateRunningAsRoot and @ValidateNotRunningAsRoot with
pytest.mask.skipif.

Change-Id: I0d9fea0f94a767071848ba31a5fc30d8a6a8e01f
Signed-off-by: Nir Soffer 
---
M tests/storage/blockdev_test.py
M tests/storage/fileutil_test.py
M tests/storage/mount_test.py
3 files changed, 10 insertions(+), 9 deletions(-)

Approvals:
  Adam Litke: Looks good to me, but someone else must approve
  Nir Soffer: Verified; Looks good to me, approved
  Jenkins CI: Passed CI tests
  Irit Goihman: Looks good to me, but someone else must approve
  Freddy Rolland: Looks good to me, but someone else must approve