tests: extend netlink protocol check
tests: extend netlink protocol check

* tests/netlink_protocol.c (send_query): Check that no part
of netlink message is fetched beyond the end of message.
Check decoding of zero address and zero length messages.
Check decoding of messages with nlmsg_len exceeding message length.

Saruta/strace,cuviper/strace,Saruta/strace,cuviper/strace,cuviper/strace,Saruta/strace,Saruta/strace,cuviper/strace,Saruta/strace,cuviper/strace