* nxos_ospf_vrf:sanity: ignore no default-metric idempotence tests when I7 images
This is a sanity test cleanup to handle a known image bug with (N9K) I7 images.
The I7 image rejects 'no default-metric' configs, so we're skipping the idempotence
tests that involve this bug.
Tested on N9K images: 9.2(2), 7.0(3)I7, 7.0(3)I2
* simplify check for I7
* The test was setting `lsa max` value to 2222 but the default `lsa hold` value is 5000.
* `hold` must be less than `max` or else the device raises a clierror, so I just added a lower non-default `hold` value to satisfy the cli.
* Remove 1.1.1.1 from *_config tests
* remove from *_smoke and *_system
* Miscellaneous other tests
* Remove from module documentation as well
* Remove from unit tests as well
* Remove accidental duplication from rebase
* 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
