* Use expect module to copy files
* Remove old and redundant upgrade files
* Return error message instead of code
* Cleanup copy command code
* Fix force issue in nxos_install_os
* new nxos_install_os integration tests
* Uncomment transport tests
* Revert negative test change
* Remove combined option that is no longer required
* Make shippable happy
* Add n5k test files
(cherry picked from commit a721572206)
d1a38f1f72