git-codereview: recognize rpc:// and sso:// as Gerrit origins

Change-Id: I43e14ef54a5c9936f3c80fa87e9b9f0ed468b05a
Reviewed-on: https://go-review.googlesource.com/c/151737
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Bryan C. Mills <bcmills@google.com>
diff --git a/git-codereview/config.go b/git-codereview/config.go
index 8bf87fd..d7a802e 100644
--- a/git-codereview/config.go
+++ b/git-codereview/config.go
@@ -62,6 +62,9 @@
 	if strings.Contains(origin, "github.com") {
 		return false
 	}
+	if strings.HasPrefix(origin, "sso://") || strings.HasPrefix(origin, "rpc://") {
+		return true
+	}
 	if !strings.Contains(origin, "https://") {
 		return false
 	}