Update to Helm 2.9.1 (#10)

Helm 2.9.1 fixes a nasty init bug.
https://github.com/kubernetes/helm/releases/tag/v2.9.1

Author: arbourd

Dockerfile

@@ -3,7 +3,7 @@ MAINTAINER Mario Siegenthaler <[email protected]>
 
 RUN apk add --update --no-cache ca-certificates git
 
-ARG VERSION=v2.9.0
+ARG VERSION=v2.9.1
 ARG FILENAME=helm-${VERSION}-linux-amd64.tar.gz
 
 WORKDIR /