[exporter/datadog] Reduce log level of retriable errors to Debug level

[songy23]

Component(s)

datadogexporter

What happened?

Description

opentelemetry-collector-contrib/exporter/datadogexporter/internal/clientutil/retrier.go

Line 84 in df395d7

"Request failed with retriable errors. Will retry the request after interval.",

This log indicates a temporary retriable error occurred and the exporter should retry on it. Requests will probably go through after retries but this log has caused customer confusions.

Steps to Reproduce

Expected Result

Actual Result

Collector version

head

Environment information

Environment

OS: (e.g., "Ubuntu 20.04")
Compiler(if manually compiled): (e.g., "go 14.2")

OpenTelemetry Collector configuration

No response

Log output

No response

Additional context

No response

[github-actions]

Pinging code owners for exporter/datadog: @mx-psi @gbbr @dineshg13 @liustanley @songy23. See Adding Labels via Comments if you do not have permissions to add labels yourself.