[bug 1071567] Update ElasticUtils to 0.10.1

This updates ElasticUtils to 0.10.1 which will work with Elasticsearch
1.2. This needs to land before we can upgrade the cluster else the world
will end (and catch everyone completely offguard).
Merge pull request #350 from willkg/update-elasticutils

Update ElasticUtils to 0.10.1
Update selenium requirement

The previous version had bugs in regards to Firefox 32.
Fix throttle-testing test and fix pep-8 issue

The throttle-testing test was being throttled if you ran it twice in a
row. This adds a timestamp to the description to prevent it from being
throttled so it can test throttling.