This is a modification of erikh/netlink-remove-address PR

This is a modification of original PR by @erikh (R118)
to keep the netlink codebase more consistent and my OCD
under control :-)

Docker-DCO-1.1-Signed-off-by: Milos Gajdos <milosgajdos83@gmail.com> (github: milosgajdos83)
Added NetworkLinkDelIp() into netlink_unsupported.go

Docker-DCO-1.1-Signed-off-by: Milos Gajdos <milosgajdos83@gmail.com> (github: milosgajdos83)
Tabbed the test build spec in Makefile

Docker-DCO-1.1-Signed-off-by: Milos Gajdos <milosgajdos83@gmail.com> (github: milosgajdos83)
Fixed typo ipAssingned -> ipAssigned

Docker-DCO-1.1-Signed-off-by: Milos Gajdos <milosgajdos83@gmail.com> (github: milosgajdos83)
Fixing a copy-cat from original PR.

Docker-DCO-1.1-Signed-off-by: Milos Gajdos <milosgajdos83@gmail.com> (github: milosgajdos83)
Merge pull request #149 from milosgajdos83/modify-PR118

Modification of erikh/netlink-remove-address PR