support pip3 install with old version package

tests/compatibility/init.sh

@@ -103,7 +103,7 @@ if [ $RET -eq 0 ]; then
         pkg_name=`basename $CLIENT_PKG`
         pkg_dir=`echo "$pkg_name"|sed "s/-Linux-x64.tar.gz//"`
         docker cp $CLIENT_PKG $container_name4:/home/
-        docker exec $container_name4 sh -c "cd /home;tar xzf $pkg_name;pip3 install /home/$pkg_dir/connector/python"
+        docker exec $container_name4 sh -c "cd /home;tar xzf $pkg_name;if [ -d /home/$pkg_dir/connector/python/linux/python3 ]; then pip3 install /home/$pkg_dir/connector/python/linux/python3; else pip3 install /home/$pkg_dir/connector/python; fi"
         RET=$?
     fi
 fi

tests/compatibility/run_test.sh

@@ -116,6 +116,8 @@ docker exec $container_name4 taos -h $container_name1 -s "CREATE DNODE \"$contai
 docker exec $container_name2 service taosd start
 docker exec $container_name3 service taosd start
 
+sleep 10
+
 # show nodes
 docker exec $container_name4 taos -h $container_name1 -s "SHOW DNODES;"
 docker exec $container_name4 taos -h $container_name1 -s "SHOW MNODES;"