cqlsh: Include sub-second precision in timestamps by default

cqlsh:ccc> desc COLUMNFAMILY ez_task_result ;

CREATE TABLE ccc.ez_task_result (
submissionid text,
ezid text,
name text,
time timestamp,
analyzed_index_root text,
...
...
PRIMARY KEY (submissionid, ezid, name, time)

cqlsh:ccc> select submissionid, ezid, name, time, state, status, translated_criteria_status from ez_task_result where submissionid='760dd154670811e58c04005056bb6ff0' and ezid='760dd6de670811e594fc005056bb6ff0' and name='run-sanities' and time>='2015-09-29 20:54:23-0700';

submissionid | ezid | name | time | state | status | translated_criteria_status
----------------------------------------------------------------------------------------------------------------------------------------------------
760dd154670811e58c04005056bb6ff0 | 760dd6de670811e594fc005056bb6ff0 | run-sanities | 2015-09-29 20:54:23-0700 | EXECUTING | IN_PROGRESS | run-sanities started

(1 rows)
cqlsh:ccc>

cqlsh:ccc> select submissionid, ezid, name, time, state, status, translated_criteria_status from ez_task_result where submissionid='760dd154670811e58c04005056bb6ff0' and ezid='760dd6de670811e594fc005056bb6ff0' and name='run-sanities' and time='2015-09-29 20:54:23-0700';

submissionid | ezid | name | time | analyzed_index_root | analyzed_log_path | clientid | end_time | jenkins_path | log_file_path | path_available | path_to_task | required_for_overall_status | start_time | state | status | translated_criteria_status | type
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-----

(0 rows)
cqlsh:ccc>