add new requirement to support onboarding PNF software version(s).

Details information on wiki:   [ONAP R6+ Onboarding VNF/PNF package format, non-MANO artifacts set definition[link title|https://wiki.onap.org/pages/viewpage.action?pageId=64008267]

Proposed Text (red font)

-------------------

Requirement: R-xxxxx
target: PNF CSAR PACKAGE
keyword: MUST
introduced: frankfurt

If the Manifest file in the PNF CSAR package includes "onap_pnf_sw_information" as a non-MANO artifact set identifiers , then the PNF software information file is included in the package and it MUST be compliant to:

-The file extension which contains the PNF software version must be .yaml

-The PNF software version information must be specified as following:

  pnf_ software_information:  

  - pnf_software_version:  "<version>”

-------------------