Add support for Helm v3

This adds support for Helm v3.
- 'helm init' and initialization is no longer required
- 'chartmuseum' is used as a drop-in replacement for 'helm serv'
- all Charts require the tag: apiVersion: v1 (or v2)

This updates nginx-ingress chart to specify apiVersion.

Change-Id: Ic8d4454913fc4c65d1e17adb971f08200631f4d0
Story: 2007000
Task: 39713
Depends-On: https://review.opendev.org/719962
Signed-off-by: Jim Gauld <james.gauld@windriver.com>

stx-nginx-ingress-controller-helm/centos/stx-nginx-ingress-controller-helm.spec

@@ -31,8 +31,10 @@ Source5: nginx_ingress_controller_manifest.yaml
 BuildArch: noarch
 
 BuildRequires: helm
+BuildRequires: chartmuseum
 
 Patch01: 0001-Update-for-kubernetes-API-1.16.patch
+Patch02: 0002-Update-nginx-ingress-chart-for-Helm-v3.patch
 
 %description
 StarlingX Nginx Ingress Controller Application Armada Helm Charts
@@ -41,30 +43,12 @@ StarlingX Nginx Ingress Controller Application Armada Helm Charts
 %setup -n helm-charts
 
 %patch01 -p1
+%patch02 -p1
 
 %build
-# initialize helm and build the toolkit
-# helm init --client-only does not work if there is no networking
-# The following commands do essentially the same as: helm init
-%define helm_home  %{getenv:HOME}/.helm
-mkdir  %{helm_home}
-mkdir  %{helm_home}/repository
-mkdir  %{helm_home}/repository/cache
-mkdir  %{helm_home}/repository/local
-mkdir  %{helm_home}/plugins
-mkdir  %{helm_home}/starters
-mkdir  %{helm_home}/cache
-mkdir  %{helm_home}/cache/archive
-
-# Stage a repository file that only has a local repo
-cp %{SOURCE1} %{helm_home}/repository/repositories.yaml
-
-# Stage a local repo index that can be updated by the build
-cp %{SOURCE2} %{helm_home}/repository/local/index.yaml
-
 # Host a server for the charts
-helm serve --repo-path . &
-helm repo rm local
+chartmuseum --debug --port=8879 --context-path='/charts' --storage="local" --storage-local-rootdir="." &
+sleep 2
 helm repo add local http://localhost:8879/charts
 
 # Create the tgz file

stx-nginx-ingress-controller-helm/stx-nginx-ingress-controller-helm/files/0002-Update-nginx-ingress-chart-for-Helm-v3.patch

@@ -0,0 +1,22 @@
+From 01e491844ccf4bc89533251c1868fd9e8bbb5483 Mon Sep 17 00:00:00 2001
+From: Jim Gauld <james.gauld@windriver.com>
+Date: Wed, 29 Apr 2020 16:36:02 -0400
+Subject: [PATCH] Update nginx-ingress chart for Helm v3
+
+Signed-off-by: Jim Gauld <james.gauld@windriver.com>
+---
+ stable/nginx-ingress/Chart.yaml | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/stable/nginx-ingress/Chart.yaml b/stable/nginx-ingress/Chart.yaml
+index a9d64ed..6574c3f 100644
+--- a/stable/nginx-ingress/Chart.yaml
++++ b/stable/nginx-ingress/Chart.yaml
+@@ -1,3 +1,4 @@
++apiVersion: v1
+ name: nginx-ingress
+ version: 1.4.0
+ appVersion: 0.23.0
+-- 
+1.8.3.1
+