Some type-specific NMSetting implementations (bond, bridge, team, vlan)
have their own 'interface-name' property. This property will be
deprecated in favour of 'interface-name' in NMSettingConnection.

Change verify() and normalize() to check that the redundant
values match and repair/normalize the properties.

Force the virtual interface name of the type-specific setting to be
equal to NMSettingConnection:interface_name. This way, the depreacted
field stays valid and backward compatible.

NMSettingInfiniband is special, because it does not have a backing
property for the interface name, although it implements
get_virtual_iface_name(). To account for this, some special handling
is needed in order not to change the behaviour of get_virtual_iface_name().

Signed-off-by: Thomas Haller <thaller@redhat.com>