Python 3 has removed dict.has_key in favour of 'key in dict'. Change-Id: I9852a5f57d672bea815308eb647a0ce45624fad5 Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/15987 Reviewed-by: Giacomo Travaglini <giacomo.travaglini@arm.com>