These are simple tests to check system that was just booted.

Static method can't be used this way. The only other clean alternative
is just changing it from method to function.

Upper case are constants and we do not consider these as constants so we
should not name them that way.

Fix of typo nsfram vs nsfarm

It makes no sense as we reset access rights either way. Let's just check
if it is standard file and that is it.

The problem with assert based implementation is that we are missing
crucial information like what was in output in error message. This just
let's pexpect throw exception and that is fine.

The standard is to use 120 columns but my editor was configured to 79 so
I modified it to be of correct width in this commit.