zdtm.py: Add dirs write perms for low-prio tests and flavors
zdtm.py: Add dirs write perms for low-prio tests and flavors

Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@parallels.com>

AuthenticEshkinKot/criu,KKoukiou/criu-remote,KKoukiou/criu-remote,wtf42/criu,svloyso/criu,wtf42/criu,efiop/criu,tych0/criu,svloyso/criu,ldu4/criu,fbocharov/criu,AuthenticEshkinKot/criu,AuthenticEshkinKot/criu,fbocharov/criu,efiop/criu,svloyso/criu,AuthenticEshkinKot/criu,fbocharov/criu,svloyso/criu,wtf42/criu,wtf42/criu,eabatalov/criu,eabatalov/criu,ldu4/criu,efiop/criu,tych0/criu,fbocharov/criu,eabatalov/criu,efiop/criu,tych0/criu,fbocharov/criu,tych0/criu,eabatalov/criu,svloyso/criu,KKoukiou/criu-remote,efiop/criu,svloyso/criu,KKoukiou/criu-remote,tych0/criu,efiop/criu,eabatalov/criu,tych0/criu,eabatalov/criu,AuthenticEshkinKot/criu,ldu4/criu,ldu4/criu,wtf42/criu,KKoukiou/criu-remote,wtf42/criu,fbocharov/criu,KKoukiou/criu-remote,ldu4/criu,AuthenticEshkinKot/criu,ldu4/criu