* 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)
* Use expect module to copy files
* Add force option for disruptive upgrades
* Revert changes to copy_kick_system_images.yaml
(cherry picked from commit c53e3ca8e9)
* Add nxos_install_os integration tests
* Update call to check timers
* Update check_ansible_timer method
* Modify network_cli integration tests
* Add timer check for nxos_install_os
* Add comments for clear_persistent_sockets
* Update connection info for tests
* More updates
* Restructure files for provider and non-provider testing
* Update env var name and add check for ISSU switchover
