Allow to connect to newrelic Europe endpoint

[njimenezotto]

Is your feature request related to a problem? Please describe.
Trying to connect to newrelic EU endpoint is not possible as the US endpoint is hardcoded here:
https://github.com/keyval-dev/odigos/blob/main/autoscaler/controllers/gateway/config/newrelic.go

Describe the solution you'd like
A droplist in the UI to select which location you are using. Behind, odigos will set the right endpoint.

[RonFed]

@njimenezotto This should be resolved in the next odigos release

[njimenezotto]

Thanks!