Increase a time window for TestNodeStatus
Increase a time window for TestNodeStatus

This was flaky in https://circleci.com/gh/tschottdorf/cockroach/2128:

--- FAIL: TestNodeStatus (6.37s)
  cli_test.go:898: time (2016-02-25 19:58:22 +0000 UTC) not within range [2016-02-25 19:58:16 +0000 UTC,2016-02-25 19:58:21 +0000 UTC]
  cli_test.go:898: time (2016-02-25 19:58:22 +0000 UTC) not within range [2016-02-25 19:58:16 +0000 UTC,2016-02-25 19:58:21 +0000 UTC]

arjun4084346/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,glycerine/cockroach,petermattis/cockroach,sunya123/cockroach,nieyy/cockroach,bg451/cockroach,petermattis/cockroach,vivekmenezes/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,sunya123/cockroach,petermattis/cockroach,maxlang/cockroach,vivekmenezes/cockroach,maxlang/cockroach,maxlang/cockroach,vivekmenezes/cockroach,vivekmenezes/cockroach,cockroachdb/cockroach,cockroachdb/cockroach,bg451/cockroach,arjun4084346/cockroach,cuongdo/cockroach,glycerine/cockroach,cuongdo/cockroach,glycerine/cockroach,glycerine/cockroach,sunya123/cockroach,veteranlu/cockroach,petermattis/cockroach,bg451/cockroach,cockroachdb/cockroach,bg451/cockroach,vivekmenezes/cockroach,sunya123/cockroach,cockroachdb/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,arjun4084346/cockroach,vivekmenezes/cockroach,maxlang/cockroach,paperstreet/cockroach,bg451/cockroach,maxlang/cockroach,petermattis/cockroach,arjun4084346/cockroach,petermattis/cockroach,nieyy/cockroach,nieyy/cockroach,cuongdo/cockroach,sunya123/cockroach,nieyy/cockroach,arjun4084346/cockroach,glycerine/cockroach,glycerine/cockroach,cuongdo/cockroach,arjun4084346/cockroach,petermattis/cockroach,sunya123/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,cuongdo/cockroach,nieyy/cockroach,paperstreet/cockroach,paperstreet/cockroach,paperstreet/cockroach,veteranlu/cockroach,paperstreet/cockroach,cuongdo/cockroach,maxlang/cockroach,vivekmenezes/cockroach,maxlang/cockroach,paperstreet/cockroach,vaibhavarora/cockroach,vaibhavarora/cockroach,nieyy/cockroach,veteranlu/cockroach,glycerine/cockroach,cockroachdb/cockroach,sunya123/cockroach,arjun4084346/cockroach,arjun4084346/cockroach,bg451/cockroach,veteranlu/cockroach,cuongdo/cockroach,cockroachdb/cockroach,nieyy/cockroach,vivekmenezes/cockroach,maxlang/cockroach,veteranlu/cockroach,veteranlu/cockroach,sunya123/cockroach,nieyy/cockroach,veteranlu/cockroach,vaibhavarora/cockroach,paperstreet/cockroach,petermattis/cockroach,vaibhavarora/cockroach,veteranlu/cockroach,bg451/cockroach,glycerine/cockroach