test: add test cases for trans

tests/script/tsim/trans/lossdata1.sim

+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/cfg.sh -n dnode1 -c transPullupInterval -v 1
+system sh/exec.sh -n dnode1 -s start
+sql connect
+
+print ======= backup sdbdata
+system sh/exec.sh -n dnode1 -s stop
+system cp ../../../../sim/dnode1/data/mnode/data/sdb.data  ../../../../sim/dnode1/data/mnode/data/sdb.data.bak1
+system sh/exec.sh -n dnode1 -s start
+sql connect
+
+print =============== create user1
+sql create user user1 PASS 'user1'
+sql create user user2 PASS 'user2'
+sql show users
+if $rows != 3 then 
+  return -1
+endi
+
+system sh/exec.sh -n dnode1 -s stop
+
+print ======= restore backup data
+system cp ../../../../sim/dnode1/data/mnode/data/sdb.data.bak1  ../../../../sim/dnode1/data/mnode/data/sdb.data
+system sh/exec.sh -n dnode1 -s start
+sql connect
+
+sql show users
+if $rows != 3 then 
+  return -1
+endi
+
+system sh/exec.sh -n dnode1 -s stop 
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