It seems that we need these 2 options enabled for both aufs and devicemapper drivers when running on EXT4 - so test for them

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
Merge pull request #8080 from SvenDowideit/test-for-ext4-fs-kernel-options

It seems that we need these 2 options enabled for both aufs and devicema...