updating LList test case.
updating LList test case.

trupty/aerospike-client-python,trupty/aerospike-client-python,arthurprs/aerospike-client-python,aerospike/aerospike-client-python,aerospike/aerospike-client-python,aerospike/aerospike-client-python,arthurprs/aerospike-client-python,trupty/aerospike-client-python,arthurprs/aerospike-client-python