CA-100561: Fix bash completion with grep color

Signed-off-by: Harrie Pieters <harrie.pieters@citrix.com>
CA-92553: Thoroughly clear PCI attachments for stopped VMs

This should not be necessary if many-to-many relations in the DB
work properly. People have reported issues that may indicate that this is
not the case, but we have not yet found the root cause. Therefore, this
code is added "just to be sure".

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>
CA-96950: Fix HIMN bridge name if needed

Previously, the bridge name used for the Host Internal Management Network
(HIMN) was usually xapi0, i.e. a normal name in the xapi* range. Now, the HIMN
has a special bridge name ("xenapi").

This commit ensures that the new name is used on existing HIMNs.

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>
CA-96541/SCTX-1188: Fix race condition when creating metrics for VLAN PIFs

This fixes a race condition between the thread that copies bonds and VLANs from
the master when a new slave joins the pool, and the thread that creates/updates
the PIF_metrics (the "monitor thread"). Or in fact a race between anything that
creates a bond and very soon after that a VLAN on top of it.

Since XCP1.6/XS6.1, VLANs no longer have their own PIF_metrics. Rather, they point
to the PIF_metrics of the underlying PIF, which can be either a physical PIF
(e.g. for eth0), or a bond PIF. Therefore, the carrier of a VLAN PIF is the same
as the carrier of the underlying PIF.

When a physical PIF or bond PIF is created, it does not immediately have
PIF_metrics (PIF.metrics = "OpaqueRef:NULL"). The PIF_metrics object is created
and assigned to the PIF by the monitor thread a short while after that. If you
create a VLAN before the PIF_metrics have been created, the PIF.metrics field from
the underlying PIF will still be copied, which is "OpaqueRef:NULL". This will never
get updated, because the monitor thread ignores VLANs.

The fix is simply to immediately create an (empty) metrics object when creating a
bond.

Signed-off-by: Rob Hoes <rob.hoes@citrix.com>
Merge pull request #1083 from robhoes/ca96541

CA-96541/SCTX-1188: Fix race condition when creating metrics for VLAN PIFs
Merge pull request #1081 from robhoes/ca96950

CA-96950: Fix HIMN bridge name if needed
Merge pull request #1073 from robhoes/gpu

CA-92553: Thoroughly clear PCI attachments for stopped VMs
Merge pull request #1066 from HPieters/CA-100561

CA-100561: Fix bash completion with grep color