Turns out on devices where only Gigabit is available (like our
csr nodes in CI), duplex is not configurable, thus the test fail.
Removing, since we are testing modification of other properties like
description and mtu and have good coverage.
* Add intent arguments for ios_interface
* Intent argument support
* Integration test case for intent arguments
* Fix ci issue
* Add intent arguments for iosxr_interface
* Add intent check support for iosxr_interface
* Integration test for intent + configuration
* Fix ci failure
* ios implementation for net_interface
* ios_interface implementation
* ios_interface integration test
* net_interface integration test for ios and other refactor
* Update boilerplate and minor refactor
