tests: strange redirection

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I just found
2>&1 >> $TS_OUTPUT
in many tests.

I am not sure, whether it does what is expected:

2>&1 >> $TS_OUTPUT
which does:
Redirect stdout to $TS_OUTPUT and redirect stderr to stdout.

I guess that it is most probably intended to be:
>> $TS_OUTPUT 2>&1
which does:
Redirect stdout and stderr to $TS_OUTPUT.

Here is a global fix:
cd tests/ts
sed -i 's:2>\&1 >> \$TS_OUTPUT:>> $TS_OUTPUT 2>\&1:g' $(fgrep -rl '2>&1 >> $TS_OUTPUT' .)

I ran a check, and it seems, that there could be some minor issues in:

MD raid1 (whole-disks)
mount-by-uuid
mount-flags
x-mount.mkdir
fstab-label
fstab-uuid

The current version of redirection can cause false positive result of
the test.

-- 
Best Regards / S pozdravem,

Stanislav Brabec
software developer
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