VES registration requirement is specified in multiple place: R22346 / R74763 / section 5.1.11

Proposed Change

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.. req::
:id: R-74763
:target: VNF or PNF HEAT
:keyword: MUST

The VNF or PNF provider *MUST* provide an artifact per VNF or PNF that contains
all of the xNF Event Records supported. The artifact should include
reference to the specific release of the VNF or PNF Event Stream Common Event
Data Model document it is based on. (e.g.,
`VES Event Listener <https://onap.readthedocs.io/en/latest/submodules/vnfsdk/model.git/docs/files/VESEventListener.html>`__)

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