Feature/sangshuduo/td 5136 taosdemo rework (#7432)

* [TD-5136]<feature>: taosdemo simulate real senario.

* update test case according to taosdemo change

* adjust range of semi-random data.

* make demo mode use different tag name and value.

* change malloc to calloc for pid allocation.

* fix typo.

* fix binary length default value and group id logic.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

src/kit/taosdemo/taosdemo.c

@@ -626,7 +626,7 @@ SArguments g_args = {
         "INT",           // datatype
         "FLOAT",         // datatype. DEFAULT_DATATYPE_NUM is 3
     },
-    16,              // len_of_binary
+    64,              // len_of_binary
     4,               // num_of_CPR
     10,              // num_of_connections/thread
     0,               // insert_interval
@@ -2600,7 +2600,7 @@ static char* generateTagValuesForStb(SSuperTable* stbInfo, int64_t tableSeq) {
             if ((g_args.demo_mode) && (i == 0)) {
                 dataLen += snprintf(dataBuf + dataLen,
                         TSDB_MAX_SQL_LEN - dataLen,
-                        "%"PRId64",", tableSeq % 10);
+                        "%"PRId64",", (tableSeq % 10) + 1);
             } else {
                 dataLen += snprintf(dataBuf + dataLen,
                         TSDB_MAX_SQL_LEN - dataLen,