Test can't be run independenly

[dylanmcreynolds]

This test asserts cannot be run independent of other tests because it's expecting the number of hits to include an item posted in a different test. Tests should be able to be run on their own:

splash-server/splash/test/test_references_api.py

Line 64 in 153fe5a

def test_search(api_url_root, splash_client, token_header):