applications API does not include the cluster name

[sgandon]

Summary

the api/v1/applications do not include the cluster name even though it is set on the cluster definition.

Motivation

We are used an embedded model where argoCD is installed inside each cluster we provide.
We have multiple clusters and their definition look like this

they all have the same server value and the cluster name allows for identifying them.
When quering the applications api the response does not provide the cluster name, only the server value

the doc says

name:
string
Name is an alternate way of specifying the target cluster by its symbolic name. This must be set if Server is not set.

Proposal

the api should include the cluster name if it is available.