Handle CLIENT_INFO command in worker

[venkatsridhar95]

Helps address Issue #344

Flag to enable/disable passing the command (EnableCmdClientInfoToWorker)

EnableCmdClientInfoToWorker enabled

// Write 
t15:43:02.07	API	CLIENT_SESSION
    E15:43:02.07	CLIENT_INFO	TestApplication	0	PoolStack=hera:CLIENT_INFO*CalThreadId=0*TopLevelTxnStartTime=18845a15936*Host=hera-host
    $1838983996	insert into mytesttable (id) values (1)
    A15:43:02.07	EXEC	1838983996	0	6.6	HOST=TESTDB
    $1838084279	insert into mytesttable (id) values (2)
    A15:43:02.18	EXEC	1838084279	0	2.6	HOST=TESTDB
    E15:43:02.29	COMMIT	Local	0
T15:43:02.30	API	CLIENT_SESSION	0	232	corr_id_=7eef73d715838&log_id_=18845a15936&worker_pid=259952&sid=769

// Read
t15:43:02.41	API	CLIENT_SESSION
    E15:43:02.41	CLIENT_INFO	TestApplication	0	PoolStack=hera:CLIENT_INFO*CalThreadId=0*TopLevelTxnStartTime=18845a15a8a*Host=hera-host
    $3523565769	select * from mytesttable
    A15:43:02.41	EXEC	3523565769	0	5.6	HOST=TESTDB
    A15:43:02.41	SQL	OCC_COLS_INFO	0	0	CMD=22
    A15:43:02.41	FETCH	3523565769	0	3.4	HOST=TESTDB&psize=28
T15:43:02.41	API	CLIENT_SESSION	0	9.6	corr_id_=7eef73d715838&log_id_=18845a15a8a&worker_pid=259924&sid=2276

EnableCmdClientInfoToWorker disabled

// Write 
$1838983996	insert into mytesttable (id) values (1)
t15:47:48.57	API	CLIENT_SESSION
    A15:47:48.57	EXEC	1838983996	0	5.2	HOST=TESTDB
    $1838983996	insert into mytesttable (id) values (1)
    A15:47:48.67	EXEC	1838983996	0	2	HOST=TESTDB
    E15:47:48.78	COMMIT	Local	0
T15:47:48.78	API	CLIENT_SESSION	0	216	corr_id_=9fd087945b777&log_id_=18845a5b85a&worker_pid=260592&sid=769

// Read
$3523565769	select * from mytesttable
t15:47:48.91	API	CLIENT_SESSION
    A15:47:48.91	EXEC	3523565769	0	3.1	HOST=TESTDB
    A15:47:48.91	SQL	OCC_COLS_INFO	0	0	CMD=22
    A15:47:48.91	FETCH	3523565769	0	4.8	HOST=TESTDB&psize=32
T15:47:48.91	API	CLIENT_SESSION	0	8.4	corr_id_=9fd087945b777&log_id_=18845a5b9ae&worker_pid=260607&sid=1530

[shtiencode]

Looks good.