* I seem to have forgotten the back half of tests
* Set http timeout from persistent_command_timeout
* Tweak URL generation and provide URL on error
* Push var_options to connection process
* Don't wait forever if coming from persistent
* Don't send the entire contents of variables to ansible-connection
* Add nxos_file_copy IT
* Restructure nxos_igmp tests
* add nxos_igmp_interface IT
* add nxos_igmp_snooping IT
* add nxos_ntp_auth IT
* Add nxos_ntp_options IT
* update nxos.yaml with new tests
* update nxos_ntp_options test
* update nxos_ntp_auth IT