Do slightly more validation if NMSettingVlan properties, and make sure
that at least one method of specifying a parent is used.
Remove the check that id is in range, since gobject will not allow you
to set the property to a value outside its declared range anyway.
When NM was registering all of its enum types by hand, it was using
NamesLikeThis rather than the default names-like-this for the "nick"
values. When we switched to using glib-mkenums, this resulted in
dbus-glib using different strings for the D-Bus error names, causing
compatibility problems.
Fix this by using glib-mkenums annotations to manually fix all the
enum values back to what they were before. (This can't be done in a
more automated way, because the old names aren't 100% consistent. Eg,
"UNKNOWN" frequently becomes "UnknownError" rather than just
"Unknown".)
Add documentation so the API spec generator can do something
for the VLAN setting. Also enforce validation of the ingress
and egress priority maps; 802.1D priorities are limited to
values from 0 - 7 and Linux SKB values are 32 bits.
Also, the 'slave' property is a duplicate of the 'master'
property added to NMSettingConnection in the bonding work
so we can get rid of it and use 'master' instead.
