This is a sanity test cleanup to handle a known image bug with (N9K) I7 images.
The I7 image fails to enable some snmp trap link configs causing an idempotency failure in the sanity, so we're skipping the idempotence tests that involve this bug.
Tested on N9K images: 9.2(2), 7.0(3)I7.
* 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
* HTTPAPI connection
* Punt run_commands to cliconf or httpapi
* Fake enable_mode on eapi
* Pull changes to nxos
* Move load_config to edit_config for future-preparedness
* Don't fail on lldp disabled
* Re-enable check_rc on nxos' run_commands
* Reorganize nxos httpapi plugin for compatibility
* draft docs for connection: httpapi
* restores docs for connection:local for eapi
* Add _remote_is_local to httpapi
