add bucket-policy attr to all the policy tests
add bucket-policy attr to all the policy tests

Signed-off-by: Abhishek Lekshmanan <0731fdeb307910eeaae4e58897b7baaba45e054b@suse.com>

timuralp/s3-tests,ceph/s3-tests,robbat2/s3-tests,andrewgaul/s3-tests,timuralp/s3-tests,andrewgaul/s3-tests,jmunhoz/s3-tests,robbat2/s3-tests,jmunhoz/s3-tests,ceph/s3-tests