adding radom-generated tests, one for where clause , the second for prjection. random arithmetical expression is generated and used for building s3-select query; result is compared to python-engine
adding radom-generated tests, one for where clause , the second for prjection. random arithmetical expression is generated and used for building s3-select query; result is compared to python-engine

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