test: modify testcases of muti-mnodes

tests/system-test/6-cluster/5dnode3mnodeSep1VnodeStopVnodeCreateDb.py

@@ -159,8 +159,8 @@ class TDTestCase:
         for tr in threads:
             tr.join()
         clusterComCheck.checkDnodes(dnodeNumbers)
-        tdSql.query("show databases")
-        tdLog.debug("we find %d databases but exepect to create %d  databases "%(tdSql.queryRows-2,allDbNumbers))
+        # tdSql.query("show databases")
+        # tdLog.debug("we find %d databases but exepect to create %d  databases "%(tdSql.queryRows-2,allDbNumbers))
 
         # tdLog.info("check DB Rows:")
         clusterComCheck.checkDbRows(allDbNumbers)

tests/system-test/6-cluster/clusterCommonCheck.py

@@ -63,6 +63,7 @@ class ClusterComCheck:
         count=0
         while count < 5:
             tdSql.query("show databases;")
+            count+=1
             if tdSql.checkRows(dbNumbers+2):
                 tdLog.success("we find %d databases and expect %d in clusters! " %(tdSql.queryRows,dbNumbers+2))
                 return True