Hotfix/sangshuduo/td 5479 taosdump s e for master (#6995)

* [TD-5479]<fix>: taosdump -S -E does not work.

* taosdemo support timestamp step from command line.

* fix help msg.
Co-authored-by: NShuduo Sang <sdsang@taosdata.com>

src/kit/taosdemo/taosdemo.c

@@ -742,8 +742,8 @@ static void printHelp() {
             "The number of threads. Default is 10.");
     printf("%s%s%s%s\n", indent, "-i", indent,
             "The sleep time (ms) between insertion. Default is 0.");
-    printf("%s%s%s%s%d\n", indent, "-S", indent,
-            "The timestamp step between insertion. Default is %d.",
+    printf("%s%s%s%s%d.\n", indent, "-S", indent,
+            "The timestamp step between insertion. Default is ",
             DEFAULT_TIMESTAMP_STEP);
     printf("%s%s%s%s\n", indent, "-r", indent,
             "The number of records per request. Default is 30000.");

src/kit/taosdump/taosdump.c

@@ -453,6 +453,8 @@ static error_t parse_opt(int key, char *arg, struct argp_state *state) {
         case 'E':
             g_args.end_time = atol(arg);
             break;
+        case 'C':
+            break;
         case 'B':
             g_args.data_batch = atoi(arg);
             if (g_args.data_batch > MAX_RECORDS_PER_REQ) {