add cp version to dataplaneInsight

[johncowen]

Description

In the GUI we've wondered about being able to inform users when certain DPPs are not using the same version of Kuma as the Zone they are in.

We already have several related properties in certain HTTP endpoints (kumaCPCompatible, and version of the DPP), we could also use the version of the CP where the GUI is running to make a check, but this is not really the check we want to do seeing as ideally we want "Is this DPP on the same version of Kuma as the Zone it is in?"

Let me know if you need more info, or anyone feel free to add info here if it helps.

The way to do this would be to add this info inside the dataplane insight.

It should most likely be set here:

kuma/pkg/core/xds/metadata.go

Lines 237 to 244 in 39369e0

	if metadata.GetVersion().GetDependencies() != nil {
	metadata.Version.Dependencies[dependencyName] = val.GetStringValue()
	}
	} else {
	dynamicMetadata[field] = val.GetStringValue()
	}
	}
	metadata.DynamicMetadata = dynamicMetadata