try fix rabit_recovery path

tests/cli/runxgb.sh

@@ -11,6 +11,6 @@ submit="python3 ../../dmlc-core/tracker/dmlc-submit"
 # instrument worker failure with mock=xxxx
 # check if host recovered from expectected iteration
 echo "====== 1. Fault recovery distributed test with checkpointing ======"
-$submit --cluster=local --num-workers=10 --local-num-attempt=4 ~/xgboost/xgboost machine.conf 10000 mock=0,10,1,0 mock=1,11,1,0 mock=1,11,1,1 mock=0,11,1,0 mock=4,11,1,0 mock=9,11,1,0 mock=8,11,2,0 mock=4,11,3,0 rabit_cache=1
+$submit --cluster=local --num-workers=10 --local-num-attempt=4 ../../xgboost machine.conf 10000 mock=0,10,1,0 mock=1,11,1,0 mock=1,11,1,1 mock=0,11,1,0 mock=4,11,1,0 mock=9,11,1,0 mock=8,11,2,0 mock=4,11,3,0 rabit_cache=1
 # hold off until hist got fixed in master
 #$submit --cluster=local --num-workers=10 --local-num-attempt=10 ~/xgboost/xgboost machinehist.conf 10000 mock=0,10,1,0 mock=1,11,1,0 mock=1,11,1,1 mock=0,11,1,0 mock=4,11,1,0 mock=9,11,1,0 mock=8,11,2,0 mock=4,11,3,0 | exit 0