test: use .pid.inprogress file for macvlan test
test: use .pid.inprogress file for macvlan test

Note, this depends on Pavel's patch here:
https://lists.openvz.org/pipermail/criu/2016-October/032499.html which is
not yet applied.

travis-ci: success for test: use .pid.inprogress file for macvlan test (rev2)
Signed-off-by: Tycho Andersen <10c18fcb898ee6b17d6575d444b125d10b3f4d6a@canonical.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@virtuozzo.com>

eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu