fix(pkg/plugin/installer): unix-style paths in HELM_PLUGINS for helm install

Supports unix-style paths (with a colon) in the HELM_PLUGINS env for installing new plugins.

Closes #11310

Signed-off-by: Sergei Karpov <xodmqjw@gmail.com>

pkg/plugin/installer/base.go

@@ -30,9 +30,10 @@ type base struct {
 
 func newBase(source string) base {
 	settings := cli.New()
+	pluginsDirs := filepath.SplitList(settings.PluginsDirectory)
 	return base{
 		Source:           source,
-		PluginsDirectory: settings.PluginsDirectory,
+		PluginsDirectory: pluginsDirs[0],
 	}
 }
 

pkg/plugin/installer/base_test.go

@@ -32,6 +32,10 @@ func TestPath(t *testing.T) {
 			source:         "https://github.com/jkroepke/helm-secrets",
 			helmPluginsDir: "/helm/data/plugins",
 			expectPath:     "/helm/data/plugins/helm-secrets",
+		}, {
+			source:         "https://github.com/jkroepke/helm-secrets",
+			helmPluginsDir: "/helm/data/plugins:/remote/helm/data/plugins",
+			expectPath:     "/helm/data/plugins/helm-secrets",
 		},
 	}