make stop taosd by kill always done with continue check

[TD-670]

tests/script/general/parser/limit1_tblocks100.sim

@@ -61,11 +61,10 @@ run general/parser/limit1_stb.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
 run general/parser/limit1_tb.sim
 run general/parser/limit1_stb.sim
 
-system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file
+system sh/exec.sh -n dnode1 -s stop -x SIGINT

tests/script/sh/exec.sh

@@ -97,13 +97,17 @@ else
   #relative path
   RCFG_DIR=sim/$NODE_NAME/cfg
   PID=`ps -ef|grep taosd | grep $RCFG_DIR | grep -v grep | awk '{print $2}'`
-  if [ -n "$PID" ]; then 
+  while [ -n "$PID" ]
+  do
     if [ "$SIGNAL" = "SIGINT" ]; then 
-      echo killed by signal
+      echo try to kill by signal SIGINT
       kill -SIGINT $PID
     else
+      echo try to kill by signal SIGKILL
       kill -9 $PID
     fi
-  fi 
+    sleep 1
+    PID=`ps -ef|grep taosd | grep $RCFG_DIR | grep -v grep | awk '{print $2}'`
+  done 
 fi