rgw/s3_boto3: Added http status code verification for DeleteBucketTagging case.
rgw/s3_boto3: Added http status code verification for DeleteBucketTagging
case.

Updated test_set_bucket_tagging test for verifying the http status code
for DeleteBucketTagging case.

Related CEPH PR: https://github.com/ceph/ceph/pull/47262

Signed-off-by: Shriya Deshmukh <fd19be60a836d7240b42cd0ec93c38d1c8d33846@seagate.com>

ceph/s3-tests,ceph/s3-tests