Move to URL based syntax formatting. (#3092)

For command line arguments we are currently following

- <node-1>:/path ... <node-n>:/path

This patch changes this to

- http://<node-1>/path ... http://<node-n>/path

cmd/object-api-listobjects_test.go

@@ -565,7 +565,7 @@ func testListObjects(obj ObjectLayer, instanceType string, t TestErrHandler) {
 }
 
 func initFSObjectsB(disk string, t *testing.B) (obj ObjectLayer) {
-	endPoints, err := parseStorageEndPoints([]string{disk}, 0)
+	endPoints, err := parseStorageEndpoints([]string{disk})
 	if err != nil {
 		t.Fatal("Unexpected err: ", err)
 	}