Update components using configgrpc.ToDialOptions and confighttp.ToClient to the new interfaces.

[pavankrish123]

Is your feature request related to a problem? Please describe.

open-telemetry/opentelemetry-collector#3128 in the core introduces changes to ToDialOptions and ToClient methods to use configuration from extensions to get hold of authentication configuration for clients.

Describe the solution you'd like

• Fix the clients to use new interfaces
• Fix the corresponding tests

Additional context

These exporters use the interfaces above.

• dynatraceexporter
• sumologicexporter
• signalfxexporter
• lokiexporter
• extension/httpforwarder

[gramidt]

@pavankrish123 - Are you taking this or should I? I'm going to start if you haven't.

[gramidt]

Starting now.

[gramidt]

The final list of components that were modified:

Exporters:

• lokiexporter
• dynatraceexporter
• sumologicexporter
• influxdbexporter
• signalfxexporter
• f5cloudexporter
• awsprometheusremotewriteexporter
• humioexporter
• uptraceexporter

Receivers:

• nginxreceiver

Extensions:

• httpforwarderextension

[gramidt]

@pavankrish123 - Could we change the title to "Update components with Client Auth Extension changes" or something of that sort? This work impacted receivers, extensions, and exporters in this contrib repo.

[pavankrish123]

Done @gramidt - Let me know