add docker run exec script

tests/pytest/docker_exec_service.sh

+#!/bin/bash
+
+mkdir -p /data/wz/crash_gen_logs/
+logdir='/data/wz/crash_gen_logs/'
+date_tag=`date +%Y%m%d-%H%M%S`
+hostname='vm_valgrind_'
+
+for i in {1..50}
+do 
+        echo $i
+        # create docker and start crash_gen
+        log_dir=${logdir}${hostname}${date_tag}_${i}
+        docker run -d  --hostname=${hostname}${date_tag}_${i} --name ${hostname}${date_tag}_${i} --privileged  -v ${log_dir}:/corefile/ -- crash_gen:v1.0 sleep 99999999999999 
+                echo create docker ${hostname}${date_tag}_${i}
+                docker exec -d ${hostname}${date_tag}_${i} sh -c 'rm -rf /home/taos-connector-python'
+                docker cp /data/wz/TDengine ${hostname}${date_tag}_${i}:/home/TDengine
+                docker cp /data/wz/taos-connector-python ${hostname}${date_tag}_${i}:/home/taos-connector-python
+                echo copy TDengine in container done!
+        docker exec  ${hostname}${date_tag}_${i}  sh -c 'sh /home/TDengine/tests/pytest/auto_run_valgrind.sh '
+        if [ $? -eq 0 ] 
+        then
+                echo crash_gen exit as expect , run success
+
+                # # clear docker which success
+                docker stop ${hostname}${date_tag}_${i}
+                docker rm -f ${hostname}${date_tag}_${i}
+        else
+                docker stop ${hostname}${date_tag}_${i}
+                echo crash_gen exit error , run failed
+        fi
+done
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