Made IbisTestEnv imported locally in fs test (#2470)
Made IbisTestEnv imported locally in fs test (#2470)


ibis-project/ibis,cpcloud/ibis,cloudera/ibis,cpcloud/ibis,ibis-project/ibis,cpcloud/ibis,cpcloud/ibis,cloudera/ibis,ibis-project/ibis,cloudera/ibis,ibis-project/ibis