Implement declarative intent arguments on eos_vlan
These are not working locally, removing for now will put it in place when issues are fixed.
* WIP Add eos_vlan module * Fix docstrings * Fix pep8 issues * Add active/suspend states logic * Add integration tests for eos_vlan * Fix map_config_to_obj on EAPI * Sixify iteritems * Add platform agnostic net_vlan integration tests