This is needed as we get software instances by their reference and not
their relative urls

slapos_jio_api_style: Add related key to be able to search instance from host compute node reference

* NotFound Errors are now handled by API

Can replace the following SlapTool calls:
* softwareReleaseError
* availableSoftwareRelease
* buildingSoftwareRelease
* destroyedSoftwareRelease

  Move shared code into InstanceTree_getNodeAndAllocationSupplyCellList
  and reuse into CRM and PDM for get the related Allocation Supply.

  This preserve the logic into a single location.

  Include more tests and extend implementation to now support Instance
  Node too.