Change in ovirt-engine[ovirt-engine-4.1]: scheduling: Fix AREM logic for host affinity

[Code Review]

>From Tal Nisan <tnisan at redhat.com>:

Tal Nisan has submitted this change and it was merged.

Change subject: scheduling: Fix AREM logic for host affinity
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scheduling: Fix AREM logic for host affinity

This patch updates the AREM algorithms with regards to host affinity.
We sadly have a logic bug in the previously merged version.
All affinity groups have to be considered separately when a VM is part
of multiple host affinity groups. The correct operation for selecting
a valid host is intersection, not union.

Change-Id: I2c95ae9ece924263accdfba5deac084506a6da2a
Bug-Url: https://bugzilla.redhat.com/1404660
Signed-off-by: Martin Sivak <msivak at redhat.com>
(cherry picked from commit 48e6d23)
---
M backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/scheduling/arem/AffinityRulesEnforcer.java
M backend/manager/modules/bll/src/test/java/org/ovirt/engine/core/bll/scheduling/arem/AffinityRulesEnforcerTest.java
2 files changed, 72 insertions(+), 124 deletions(-)

Approvals:
  Martin Sivák: Looks good to me, approved
  Jenkins CI: Passed CI tests
  Yanir Quinn: Verified



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Gerrit-MessageType: merged
Gerrit-Change-Id: I2c95ae9ece924263accdfba5deac084506a6da2a
Gerrit-PatchSet: 6
Gerrit-Project: ovirt-engine
Gerrit-Branch: ovirt-engine-4.1
Gerrit-Owner: Yanir Quinn <yquinn at redhat.com>
Gerrit-Reviewer: Andrej Krejcir <akrejcir at redhat.com>
Gerrit-Reviewer: Denis Chaplygin <dchaplyg at redhat.com>
Gerrit-Reviewer: Jenkins CI
Gerrit-Reviewer: Jenny Tokar <jtokar at redhat.com>
Gerrit-Reviewer: Martin Sivák <msivak at redhat.com>
Gerrit-Reviewer: Phillip Bailey <phbailey at redhat.com>
Gerrit-Reviewer: Roman Mohr <rmohr at redhat.com>
Gerrit-Reviewer: Tal Nisan <tnisan at redhat.com>
Gerrit-Reviewer: Yanir Quinn <yquinn at redhat.com>
Gerrit-Reviewer: gerrit-hooks <automation at ovirt.org>