dump: get a file descriptor on procfs from parasite
dump: get a file descriptor on procfs from parasite

This proc will be used for dumping zombies from pidns.

Signed-off-by: Andrey Vagin <74c05afa918858348d6db8037d82fa8124870113@openvz.org>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

wtf42/criu,gonkulator/criu,gablg1/criu,gonkulator/criu,marcosnils/criu,svloyso/criu,AuthenticEshkinKot/criu,fbocharov/criu,efiop/criu,biddyweb/criu,ldu4/criu,LK4D4/criu,sdgdsffdsfff/criu,kawamuray/criu,sdgdsffdsfff/criu,svloyso/criu,rentzsch/criu,gablg1/criu,gonkulator/criu,LK4D4/criu,rentzsch/criu,biddyweb/criu,biddyweb/criu,gablg1/criu,fbocharov/criu,svloyso/criu,marcosnils/criu,tych0/criu,AuthenticEshkinKot/criu,kawamuray/criu,KKoukiou/criu-remote,marcosnils/criu,ldu4/criu,wtf42/criu,eabatalov/criu,fbocharov/criu,gablg1/criu,biddyweb/criu,kawamuray/criu,sdgdsffdsfff/criu,AuthenticEshkinKot/criu,eabatalov/criu,LK4D4/criu,AuthenticEshkinKot/criu,KKoukiou/criu-remote,LK4D4/criu,wtf42/criu,tych0/criu,svloyso/criu,fbocharov/criu,efiop/criu,efiop/criu,eabatalov/criu,eabatalov/criu,KKoukiou/criu-remote,kawamuray/criu,tych0/criu,svloyso/criu,gablg1/criu,gonkulator/criu,eabatalov/criu,gablg1/criu,biddyweb/criu,svloyso/criu,wtf42/criu,AuthenticEshkinKot/criu,gonkulator/criu,ldu4/criu,efiop/criu,tych0/criu,rentzsch/criu,tych0/criu,efiop/criu,sdgdsffdsfff/criu,eabatalov/criu,fbocharov/criu,tych0/criu,biddyweb/criu,sdgdsffdsfff/criu,KKoukiou/criu-remote,AuthenticEshkinKot/criu,ldu4/criu,KKoukiou/criu-remote,wtf42/criu,rentzsch/criu,sdgdsffdsfff/criu,KKoukiou/criu-remote,fbocharov/criu,kawamuray/criu,efiop/criu,ldu4/criu,marcosnils/criu,LK4D4/criu,gonkulator/criu,kawamuray/criu,LK4D4/criu,rentzsch/criu,ldu4/criu,wtf42/criu,rentzsch/criu,marcosnils/criu,marcosnils/criu