* 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
* changed collection arg to argregate on 2.4 network modules
* replace users with aggregate in eos_user, junos_user, nxos_user
* added version_added to places where we replaced users with aggregate in the docs
* fix ios_static_route test
* update tests to reference aggregate instead of collection/users