The default etcd address can't be parsed correctly on the latest golang version

[freesky-edward]

I am not sure whether it is a bug of torus or golang itself. I file a bug here for deep discussion.
my case
when I run the cmd "torusctl init" with the newest go version, I got the following error message:
start to init MDS...
MDS init finished...
invalid etcd address: parse 127.0.0.1:2379: first path segment in URL cannot contain colon
root cause
I found the golang community changed its url.Parse method after I research into the code. they think "127.0.0.1:2379" is no longer the correct address according to RFC 3986. it raises the error message from the "flagconfig.BuildConfigFromFlags" when parse the "defaultEtcdAddress" via url.Parse

[mischief]

try using http://127.0.0.1:2379

[freesky-edward]

yeah, it works well. should we change the defaultEtcdAddress value of flagconfig to "http://127.0.0.1:2379"?