bug#66033: Package name conflict for "helm"

[Panos Alevropoulos]

Hi,

There seems to be a recently introduced package name conflict.
There are two packages named "helm". One is is the package manager for 
Kubernetes and the other is a synthesizer. I noticed after upgrading and helm 
suddenly jumped from 0.9.0 to 3.12.3. `guix install helm@0.9.0` restores 
helm-lv2 as a temp fix.

I suggest the latter be renamed "helm-lv2" to fix the issue. 

Panos