Log swiftpm bootstrap script output

Author: MaxDesiatov

utils/swift_build_support/swift_build_support/products/swiftpm.py

@@ -105,7 +105,7 @@ def run_bootstrap_script(self, action, host_target, additional_params=[]):
 
         helper_cmd.extend(additional_params)
 
-        shell.call(helper_cmd)
+        shell.call(helper_cmd, echo=True)
 
     def build(self, host_target):
         self.run_bootstrap_script('build', host_target, ["--reconfigure"])