add noncurrent version expiration rule w/tag filter
add noncurrent version expiration rule w/tag filter

Create 10 object versions (9 noncurrent).  Install a noncurrent
version expiration at 4 days.  Verify that 10 versions exist at
T+20, and only 1 (current) at T+60.

Signed-off-by: Matt Benjamin <b5ea062884a8f3dc969ff57d1008615447c56296@redhat.com>

robbat2/s3-tests,ceph/s3-tests,ceph/s3-tests,robbat2/s3-tests