In Dublin release, the AAI interface with regards to PNFs changes.
Currently, the PNFs are indexed by pnf-name parameter, and in Dublin, they`ll be indexed by pnf-id parameter to make them compatible with VNFs.

Implication for PRH module:

1. The PATCH command on AAI PNF entry cannot be used anymore.
2. Instead:
   1. A search based on pnf-name needs to be executed (and pnf-id fetched).
   2. The PNF-ID needs to be used to issue a PATCH command.

This EPIC is planned to cover that interface change.
There might be other alignments needed in PRH due to AAI interface changes - they`d be handled in this EPIC.