enh: dump sdb info from mnode

source/dnode/mgmt/exe/dmMain.c

@@ -21,6 +21,7 @@
 #define DM_APOLLO_URL    "The apollo string to use when configuring the server, such as: -a 'jsonFile:./tests/cfg.json', cfg.json text can be '{\"fqdn\":\"td1\"}'."
 #define DM_CFG_DIR       "Configuration directory."
 #define DM_DMP_CFG       "Dump configuration."
+#define DM_SDB_INFO      "Dump sdb info."
 #define DM_ENV_CMD       "The env cmd variable string to use when configuring the server, such as: -e 'TAOS_FQDN=td1'."
 #define DM_ENV_FILE      "The env variable file path to use when configuring the server, default is './.env', .env text can be 'TAOS_FQDN=td1'."
 #define DM_NODE_TYPE     "Startup type of the node, default is 0."
@@ -135,6 +136,7 @@ static void dmPrintHelp() {
   printf("Usage: taosd [OPTION...] \n\n");
   printf("%s%s%s%s\n", indent, "-a,", indent, DM_APOLLO_URL);
   printf("%s%s%s%s\n", indent, "-c,", indent, DM_CFG_DIR);
+  printf("%s%s%s%s\n", indent, "-s,", indent, DM_SDB_INFO);
   printf("%s%s%s%s\n", indent, "-C,", indent, DM_DMP_CFG);
   printf("%s%s%s%s\n", indent, "-e,", indent, DM_ENV_CMD);
   printf("%s%s%s%s\n", indent, "-E,", indent, DM_ENV_FILE);