Make TestTime_Elapsed less flaky
Make TestTime_Elapsed less flaky

This test fails sometimes because the elapsed time is 1.999s which
is less than 2s, but very close to 2s to not matter.

runner-mei/influxdb,jipperinbham/influxdb,archsaber/influxdb,linearb/influxdb,otoolep/influxdb,jgeiger/influxdb,jipperinbham/influxdb,archsaber/influxdb,arussellsaw/influxdb,jgeiger/influxdb,daachi/influxdb,jgeiger/influxdb,mark-rushakoff/influxdb,otoolep/influxdb,li-ang/influxdb,runner-mei/influxdb,jipperinbham/influxdb,chenziliang/influxdb,jgeiger/influxdb,pkittenis/influxdb,benbjohnson/influxdb,chenziliang/influxdb,vladlopes/influxdb,daachi/influxdb,chenziliang/influxdb,influxdata/influxdb,pkittenis/influxdb,runner-mei/influxdb,pkittenis/influxdb,archsaber/influxdb,arussellsaw/influxdb,apigee/influxdb,jipperinbham/influxdb,mnuessler/influxdb,otoolep/influxdb,apigee/influxdb,nooproblem/influxdb,jipperinbham/influxdb,vladlopes/influxdb,nooproblem/influxdb,influxdb/influxdb,jgeiger/influxdb,linearb/influxdb,mark-rushakoff/influxdb,runner-mei/influxdb,vladlopes/influxdb,daachi/influxdb,influxdb/influxdb,arussellsaw/influxdb,pkittenis/influxdb,pkittenis/influxdb,influxdb/influxdb,apigee/influxdb,nooproblem/influxdb,joaopedrotaveira/influxdb,influxdb/influxdb,mark-rushakoff/influxdb,mark-rushakoff/influxdb,joaopedrotaveira/influxdb,mvadu/influxdb,nooproblem/influxdb,mvadu/influxdb,linearb/influxdb,arussellsaw/influxdb,apigee/influxdb,joaopedrotaveira/influxdb,influxdata/influxdb,mnuessler/influxdb,archsaber/influxdb,benbjohnson/influxdb,jgeiger/influxdb,pkittenis/influxdb,mnuessler/influxdb,otoolep/influxdb,mvadu/influxdb,jipperinbham/influxdb,linearb/influxdb,linearb/influxdb,vladlopes/influxdb,joaopedrotaveira/influxdb,arussellsaw/influxdb,nooproblem/influxdb,mvadu/influxdb,influxdb/influxdb,chenziliang/influxdb,mnuessler/influxdb,mark-rushakoff/influxdb,mnuessler/influxdb,apigee/influxdb,arussellsaw/influxdb,benbjohnson/influxdb,daachi/influxdb,daachi/influxdb,li-ang/influxdb,benbjohnson/influxdb,mvadu/influxdb,mvadu/influxdb,mnuessler/influxdb,otoolep/influxdb,joaopedrotaveira/influxdb,daachi/influxdb,mark-rushakoff/influxdb,apigee/influxdb,otoolep/influxdb,influxdb/influxdb