reject: Fix for missing dependencies in netdev family

reject: Fix for missing dependencies in netdev family

Like with bridge family, rejecting with either icmp or icmpv6 must
create a dependency match on meta protocol. Upon delinearization, treat
netdev reject identical to bridge as well so no family info is lost.

This makes reject statement in netdev family fully symmetric so fix
the tests in tests/py/netdev/reject.t, adjust the related payload dumps
and add JSON equivalents which were missing altogether.

Fixes: 0c42a1f2a0cc5 ("evaluate: add netdev support for reject default")
Fixes: a51a0bec1f698 ("tests: py: add netdev folder and reject.t icmp cases")
Cc: Jose M. Guisado Gomez <guigom@riseup.net>
Signed-off-by: Phil Sutter <phil@nwl.cc>