OpenTSDB: Fixed the bug that returned 202 (ACCEPTED) status code when replying a query from a file. (https://rbcommons.com/s/pepperdata/r/2848)
- Fixed the bug that did not set the response status when OpenTSDB was replying
from a file. - Allowed the response status 200 (OK) to be changed. Now, OpenTSDB
could return an error status code if it has a problem while reading a response
file.