Update Travis config. Travis has moved from precise to trusty on Ubuntu and this has broken our tests that rely on Elasticsearch, so we need to manually pull in the right version of Elasticsearch and set that running.
Update Travis config. Travis has moved from precise to trusty on Ubuntu and this has broken our tests that rely on Elasticsearch, so we need to manually pull in the right version of Elasticsearch and set that running.

alphagov/digitalmarketplace-search-api,alphagov/digitalmarketplace-search-api