networkd(vlan): remove the interface in addition to config #468
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By only removing the configuration file and reloading it will not remove the actual interface, for that we need to ask networkd to actively remove the interface for us.
In order to maintain consistency of what's presend on disk and the MDS representation + guest agent state we are forcing the removal of the interface first and then removing the config, in case of error during networkctl call we keep using the on disk state to determine what to remove/keep.