tests: fix redirection

tests: fix redirection

Many tests do.
2>&1 >> $TS_OUTPUT
It redirects stdout to $TS_OUTPUT and stderr to stdout.

It could cause unintended ignoring of errors on strerr and false positive result
of the test.

Use
>> $TS_OUTPUT 2>&1
instead to redirect both stdout and stderr to $TS_OUTPUT.

Automatically created by:
cd tests/ts
sed -i 's:2>\&1 >> \$TS_OUTPUT:>> $TS_OUTPUT 2>\&1:g' $(fgrep -rl '2>&1 >> $TS_OUTPUT' .)

Signed-off-by: Stanislav Brabec <sbrabec@suse.cz>