Added API to update information of VNF package.
Implemented below API:-
* PATCH /vnf_packages/{vnfPkgId}
Co-authored-by: Shubham Potale <shubham.potale@nttdata.com>
Change-Id: I6d60e87b48a6703362dcd30975f300f524f8ca7a
Implements: bp enhance-vnf-package-support-part1