Fix coalesce globals to prevent subchart globals to leak upstream

Signed-off-by: Giacomo Margaria <giacomo.margaria@gmail.com>

pkg/chartutil/coalesce.go

@@ -127,9 +127,10 @@ func coalesceGlobals(dest, src map[string]interface{}) {
 			// It's not clear if this condition can actually ever trigger.
 			log.Printf("key %s is table. Skipping", key)
 			continue
+		} else {
+			// TODO: Do we need to do any additional checking on the value?
+			dg[key] = val
 		}
-		// TODO: Do we need to do any additional checking on the value?
-		dg[key] = val
 	}
 	dest[GlobalKey] = dg
 }

pkg/chartutil/coalesce_test.go

@@ -87,6 +87,9 @@ func TestCoalesceValues(t *testing.T) {
 			&chart.Chart{
 				Metadata: &chart.Metadata{Name: "ahab"},
 				Values: map[string]interface{}{
+					"global": map[string]interface{}{
+						"nested": map[string]interface{}{"foo": "bar"},
+					},
 					"scope":  "ahab",
 					"name":   "ahab",
 					"boat":   true,
@@ -135,9 +138,11 @@ func TestCoalesceValues(t *testing.T) {
 		{"{{.pequod.ahab.scope}}", "whale"},
 		{"{{.pequod.ahab.nested.foo}}", "true"},
 		{"{{.pequod.ahab.global.name}}", "Ishmael"},
+		{"{{.pequod.ahab.global.nested.foo}}", "bar"},
 		{"{{.pequod.ahab.global.subject}}", "Queequeg"},
 		{"{{.pequod.ahab.global.harpooner}}", "Tashtego"},
 		{"{{.pequod.global.name}}", "Ishmael"},
+		{"{{.pequod.global.nested.foo}}", "<no value>"},
 		{"{{.pequod.global.subject}}", "Queequeg"},
 		{"{{.spouter.global.name}}", "Ishmael"},
 		{"{{.spouter.global.harpooner}}", "<no value>"},