Allow multiple URL entries for "manfirest_href"

[Mantls]

Hi,

since the server serving the URL specified by manifest_href may be accessible via an arbitrary amount of interfaces and addresses it would be sensible to have manifest_href provide a list of URLs.

Referring to this scheme

[garethsb]

Hi @Mantls. That can be accomplished via https://specs.amwa.tv/nmos-parameter-registers/branches/main/device-control-types/manifest-base.html.

[Mantls]

Hey @garethsb,

thanks for clearing that up. Might be a good idea to provide this reference here.

[garethsb]

Reopening to discuss in @AMWA-TV/nmos-architecture-review group the issue of referring to Param Registers from IS-04.

[peterbrightwell]

Architecture Review Group review: place on backlog

[garethsb]

ARG decision, editorial change to add a sentence under manifest_href in https://github.com/AMWA-TV/is-04/blob/v1.3.x/docs/Behaviour%20-%20Nodes.md.