Removed unused methods from db.api

Since 406ff304bb09f144a59448e0e9d2d01160c7d553 reservation methods
is not called directly so it can be removed from the public API

Related to blueprint db-cleanup

Change-Id: I5a62d0528705b6773f8667375b4e8e3922a1bd15
Merge "Removed unused methods from db.api"
Xenapi: Allow windows builds with xentools 6.1 and 6.2

Building a windows VM with pre-installed xentools
6.1 or 6.2 requires device_id to be set on XEN VM record.

Requires xenapi_device_id to be set on the
image metadata, which is then used to set the device_id
on the vm record.

DocImpact

Implements: blueprint allow-windows-builds-with-xentools6-1-and-6-2
Change-Id: Id3cd9d569519f2df1afa046ddabf33f00d63c615
Merge "Xenapi: Allow windows builds with xentools 6.1 and 6.2"