Add -ExecutionPolicy Unrestricted back, was removed by #9602.

lib/ansible/runner/shell_plugins/powershell.py

@@ -57,7 +57,7 @@ def _build_file_cmd(cmd_parts, quote_args=True):
     '''Build command line to run a file, given list of file name plus args.'''
     if quote_args:
         cmd_parts = ['"%s"' % x for x in cmd_parts]
-    return ' '.join(['&'] + cmd_parts)
+    return ' '.join(_common_args + ['-ExecutionPolicy', 'Unrestricted', '-File'] + cmd_parts)
 
 class ShellModule(object):