Adding Azure Authentication support for Exporter

[hectorhdzg]

Packages impacted by this PR

@azure/monitor-opentelemetry-exporter

Issues associated with this PR

Describe the problem that is addressed by this PR

Add Authentication support

What are the possible designs available to address the problem? If there are more than one possible design, why was the one in this PR chosen?

Are there test cases added in this PR? (If not, why?)

Provide a list of related PRs (if any)

Command used to generate this PR:**(Applicable only to SDK release request PRs)

Checklists

• Added impacted package name to the issue description
• Does this PR needs any fixes in the SDK Generator?** (If so, create an Issue in the Autorest/typescript repository and link it here)
• Added a changelog (if necessary)

[azure-sdk]

API changes have been detected in @azure/monitor-opentelemetry-exporter. You can review API changes here

API changes

+     aadTokenCredential?: TokenCredential;

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[hectorhdzg]

/check-enforcer reset

[maorleger]

/check-enforcer evaluate

[hectorhdzg]

/check-enforcer evaluate

[maorleger]

/azp run

[azure-pipelines]

You have several pipelines (over 10) configured to build pull requests in this repository. Specify which pipelines you would like to run by using /azp run [pipelines] command. You can specify multiple pipelines using a comma separated list.

[maorleger]

/azp run js - monitor - ci

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).