Fix importVM for use with dummy template - #14195

Port the production fix from apache/cloudstack PR apache#14195, source commit 0cb24ba (merged into 4.22 as 273b2ea).

Reuse the supplied template and load its details without a findById lookup that filters removed records. Preserve template CPU-detail inheritance and explicit VM overrides.

Add six regression tests for dummy and active templates, non-VO templates, CPU override precedence and missing templates.

Co-authored-by: Abhisar Sinha <63767682+abh1sar@users.noreply.github.com>

findByID will fail for dummy template as it is stored in the deleted state.

VMware to KVM: cold (VDDK) and warm (CBT) migration into Ceph/RBD and Linstor, plus importVm adoption of existing RBD and Linstor volumes

Restores #13656 (merged as 0a5bf30, reverted by 510d0ec), with
the fixes found in review:

- CBT: the per-disk checkpoint between delta cycles is now read from
  the cycle snapshot's disk backing, so each delta copies only the
  changes since the previous cycle (a5578d6)
- CBT: failures of the final agent command or of recording the final
  cycle are handled through the normal cutover failure path
  (6fa7d30)
- CBT: cancel and delete keep the target disks of an imported VM
  (fd16736)
- importVm: load template details from the supplied template, so
  imports with the removed "VM Import Default Template" work again
  (port of #14195, 2a3598a)
- LINSTOR import: resource-group validation against the selected pool,
  and inspection and listing from controller metadata without
  connecting or disconnecting local DRBD resources (01058cd);
  pagination offset/limit order (ce349d8)

Feature summary:
- warm VMware-to-KVM migration with VDDK and Changed Block Tracking:
  persisted migration, cycle and disk records, preflight, delta cycles,
  operator cutover, cancel and cleanup; new admin APIs
  startVmwareCbtMigration, syncVmwareCbtMigration,
  cutoverVmwareCbtMigration, cancelVmwareCbtMigration,
  deleteVmwareCbtMigration, listVmwareCbtMigrations and
  checkVmwareCbtMigrationPrerequisites; UI under Tools
- cold direct VDDK import straight into Ceph/RBD or Linstor (raw), with
  virt-v2v in-place finalization
- adoption of existing RBD and Linstor ROOT (importVm
  importsource=shared) and DATA (importVolume) volumes without copying
- guest OS type, firmware (BIOS/UEFI, secure boot) and console defaults
  derived from the source VM configuration; static IPv4 preservation;
  Windows data disks brought online at first boot
- database changes in the 4.23.0 to 24.0.0 upgrade path

Reviewed and tested: LGTM from rp- (LINSTOR maintainer) and
alexandremattioli (tested warm CBT to QCOW2 and Ceph); Trillian smoke
tests tid-17130 on 95fc5b5: 157 OK, 0 errors.

Signed-off-by: Andrija Panic <andrija.panic@gmail.com>