Expose relevant OpenTelemetry Collector configuration

[girishc13]

Describe the feature

The feature #5155 exposes only the host and port parameters of the Collector. By default the gRPC protocol is chosen to export the traces and metrics data to the Collector. The full Collector config can be read here. From the exporter perspective, a few more options can be exposed to the user to be more flexible and allow more customisation by the user.

Your proposal

The following config parameters can be exposed:

• traces_export_protocol: gRPC or http.
• traces_exporter_tls_cert_file and traces_exporter_tls_key_file: for TLS authentication. This is useful only for cross cluster communication.

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Environment

Screenshots

[girishc13]

Users can use the environment variables defined and supported by the SDK. These arguments will just pollute the Flow api.