Do not verify OpenSearch TLS certificate in configuration examples

[misje]

By default, OpenSearch will come with a self-signed certificate. The current example configuration enables TLS verification, which will make the configuration not work for most users (unless they study the documentation). Make it easier for those who want to quickly run the connector by disabling TLS verification in the example configuration (but keep the configuration default to enabled).

[misje]

The proper fix to this issue is of course #71.