[bug 1055520] Update to ElasticUtils v0.10

This updates elasticutils to v0.10 which should work with both
Elasticsearch 0.90 and 1.0.

r?
This test fails with the new ElasticUtils because the default description is two words one of which is a stop word, so the "description_bigrams" is empty so it doesn't get indexed and then that causes the test to fail. That's all beyond the scope of the test, so I made the description long enough to generate bigrams.