Revert "Update elasticsearch from 1.9.0 to 6.1.1"
Revert "Update elasticsearch from 1.9.0 to 6.1.1"

This reverts commit cb45954c6ee1ae04605e479b90bdef9831692fe7.

mozilla/socorro,mozilla/socorro,mozilla/socorro,mozilla/socorro,mozilla/socorro,lonnen/socorro,lonnen/socorro,lonnen/socorro,lonnen/socorro,mozilla/socorro