Validate TLS certificate for connections to Elastsearch
Validate TLS certificate for connections to Elastsearch

By default Python elasticsearch client 1.x sets verify_certs to
False, which means it doesn't verify TLS certificates when connecting
to Elasticsearch over HTTPS and urllib3 prints an InsecureRequestWarning
on each request.

Setting `verify_certs=True` explicitly removes the warning and prevents
connections if the certificate doesn't validate.

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