Change "locale" value in versions-report to use __salt_system_encoding__
Change "locale" value in versions-report to use __salt_system_encoding__

locale.getpreferredencoding() may not be equal to it, and we don't use
locale.getpreferredencoding() anyway when we perform unicode conversions
in salt, we use __salt_system_encoding__.

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt