Fix unit-test error

Author: Jonathan Claudius

tests/testsuite/build_auth.rs

@@ -105,7 +105,7 @@ fn http_auth_offered() {
             authors = []
 
             [dependencies.bar]
-            git = "https://127.0.0.1:{}/foo/bar"
+            git = "http://127.0.0.1:{}/foo/bar"
         "#,
                 addr.port()
             ),