Jiri Popelka authored Mar 01, 2012 and Dan Williams committed Mar 01, 2012

When we want to change the zone an interface belongs to
we can't use firewalld's addInterface() because this one
doesn't allow to add interface to zone when it already
has been part of some other/same zone.
We need to use changeZone() method instead - hopefuly
this is the final name of this method.