Merge pull request #4172 from ipfs/fix/test/t0170-query

test: query test might work sometimes, mark it as 'might fail' 

test/sharness/t0170-dht.sh

@@ -55,13 +55,13 @@ test_expect_success 'get' '
 ## We query 3 different keys, to statisically lower the chance that the queryer
 ## turns out to be the closest to what a key hashes to.
 # TODO: flaky. tracked by https://github.com/ipfs/go-ipfs/issues/2620
-test_expect_failure 'query' '
+test_expect_success 'query' '
   ipfsi 3 dht query banana >actual &&
   ipfsi 3 dht query apple >>actual &&
   ipfsi 3 dht query pear >>actual &&
   PEERS=$(wc -l actual | cut -d '"'"' '"'"' -f 1) &&
   [ -s actual ] ||
-	test_fsh cat actual
+	test_might_fail test_fsh cat actual
 '
 
 test_expect_success 'stop iptb' '