Modern elasticsearch requires to have basic_auth as well as use TLS for connections. Along with enabling TLS we also need to ensure that self-signed certificate is trusted by freezer. We also create a default user for freezer to auth with with adding a `http_auth` config option to the driver. Change-Id: I0947eef734c9654da9419617ca321bfc8e33b16a Signed-off-by: Dmitriy Rabotyagov <noonedeadpunk@gmail.com>