fix default URLs for stable/incubator repos

docs/config.example.yaml

@@ -3,10 +3,10 @@
 repos:
   # Official repositories
   - name: stable
-    url: http://storage.googleapis.com/kubernetes-charts
+    url: https://kubernetes-charts.storage.googleapis.com
     source: https://github.com/kubernetes/charts/tree/master/stable
   - name: incubator
-    url: http://storage.googleapis.com/kubernetes-charts-incubator
+    url: https://kubernetes-charts-incubator.storage.googleapis.com
     source: https://github.com/kubernetes/charts/tree/master/incubator
   # Add your own repository
   #- name: my-repo-name

src/api/config/repos/repos.go

@@ -31,8 +31,8 @@ var official = Repos{
 	},
 	Repo{
 		Name:   "incubator",
-		URL:    "http://storage.googleapis.com/kubernetes-charts-incubator",
-		Source: "https://kubernetes-charts-incubator.storage.googleapis.com",
+		URL:    "https://kubernetes-charts-incubator.storage.googleapis.com",
+		Source: "https://github.com/kubernetes/charts/tree/master/incubator",
 	},
 }