xfstests: make 223 use more compatible indirection operator

xfstests: make 223 use more compatible indirection operator

Hello all,

I notice while running xfstests on SLES machine that the test 223 fail
because of syntax error.

# bash 223
QA output created by 223
223: line 66: syntax error near unexpected token `>'
223: line 66: `    _scratch_mkfs_geom $SUNIT_BYTES 4 $BLOCKSIZE&>>  $seq.full'

The error is due to the use of the '&>>' operator for redirection
that does not work  on older bash version(3.2.x).  Note that this
operator only seem to work with bash version 4.X+

This patch simply replace the operator with '>>  $seq.full 2>&1'
which does the same thing.

Signed-off-by: Alain Renaud <arenaud@sgi.com>
Signed-off-by: Alex Elder <aelder@sgi.com>