feat(helm): support subcharts from chartcenter

`helm package`, `helm template` and `helm install` will now work if a
subchart from chartcenter is used.

This fixes #8537

Signed-off-by: Jonas Rutishauser <jonas.rutishauser@alumni.ethz.ch>

cmd/helm/install_test.go

@@ -201,6 +201,11 @@ func TestInstall(t *testing.T) {
 			name: "install chart with only crds",
 			cmd:  "install crd-test testdata/testcharts/chart-with-only-crds --namespace default",
 		},
+		// Install with subchart from chartcenter
+		{
+			name: "install with subchart from chartcenter",
+			cmd:  "install chartcenter testdata/testcharts/chartcenter --namespace default",
+		},
 	}
 
 	runTestActionCmd(t, tests)

cmd/helm/testdata/testcharts/chartcenter/Chart.yaml

@@ -0,0 +1,8 @@
+apiVersion: v1
+description: A Helm chart for Kubernetes
+name: chartcenter
+version: 0.1.0
+dependencies:
+  - name: stable/mariadb
+    version: 4.x.x
+    repository: "https://repo.chartcenter.io"

pkg/action/install.go

@@ -594,8 +594,12 @@ func CheckDependencies(ch *chart.Chart, reqs []*chart.Dependency) error {
 
 OUTER:
 	for _, r := range reqs {
+		req := r.Name
+		if idx := strings.LastIndex(req, "/"); idx >= 0 {
+			req = req[idx+1:]
+		}
 		for _, d := range ch.Dependencies() {
-			if d.Name() == r.Name {
+			if d.Name() == req {
 				continue OUTER
 			}
 		}