others/mnt-ext-dev: Force mke2fs to create a filesystem
others/mnt-ext-dev: Force mke2fs to create a filesystem

It's required because we specify a file instead of a block device.

Signed-off-by: Andrew Vagin <74c05afa918858348d6db8037d82fa8124870113@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <c9a32589e048e044184536f7ac71ef92fe82df3e@virtuozzo.com>

KKoukiou/criu-remote,KKoukiou/criu-remote,eabatalov/criu,eabatalov/criu,eabatalov/criu,eabatalov/criu,KKoukiou/criu-remote,eabatalov/criu,KKoukiou/criu-remote,KKoukiou/criu-remote,KKoukiou/criu-remote,eabatalov/criu