Tests add indexes to a dev DB

[rileytg]

Perhaps this indicates the need to prefix indicies based on environment

[glebtv]

Currently it is possible to do it like this:

elasticsearch!({
  index_name: Rails.env.test? ? 'myapp_model_test' : 'myapp_model',
})

Or:

Mongoid::Elasticsearch.prefix = Rails.env.test? ? 'myapp_test_' : 'myapp_'

Prefixing index names is currently not enabled by default, possibly it would be better to have something like app name+env there.