enh: make the test case more rebust

tests/script/tsim/sma/rsmaCreateInsertQuery.sim

@@ -33,14 +33,14 @@ sql insert into ct1 values(now+2s, 100);
 print =============== select * from retention level 2 from memory
 sql select * from ct1;
 print $data00 $data01
-if $rows > 1 then
+if $rows > 2 then
   print retention level 2 file rows $rows > 1
   return -1
 endi
 print =============== select * from retention level 1 from memory
 sql select * from ct1 where ts > now-8d;
 print $data00 $data01
-if $rows > 1 then
+if $rows > 2 then
   print retention level 1 file rows $rows > 1
   return -1
 endi
@@ -63,7 +63,7 @@ system sh/exec.sh -n dnode1 -s start
 print =============== select * from retention level 2 from file
 sql select * from ct1;
 print $data00 $data01
-if $rows > 1 then
+if $rows > 2 then
   print retention level 2 file rows $rows > 1
   return -1
 endi
@@ -71,7 +71,7 @@ endi
 print =============== select * from retention level 1 from file
 sql select * from ct1 where ts > now-8d;
 print $data00 $data01
-if $rows > 1 then
+if $rows > 2 then
   print retention level 1 file rows $rows > 1
   return -1
 endi