Enabling the CA2007 reliability warning: Do not directly await a Task

[JeffAshton]

Description

Enabling the CA2007 reliability warning (Do not directly await a Task) as an Error.

Motivation and Context

Prevent future ConfigureAwait's from being missed.

Libraries like this should always use .ConfigureAwait( false ) to prevent deadlocks. #1636

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist

• My code follows the code style of this project
• My change requires a change to the documentation
• I have updated the documentation accordingly
• I have read the README document
• I have added tests to cover my changes
• All new and existing tests passed

License

• I confirm that this pull request can be released under the Apache 2 license

[danielmarbach]

@normj I think this is a great addition to the SDK

[danielmarbach]

Any reason why this hasn't been merged yet?

[boblodgett]

These changes have been manually merged. Thank you @danielmarbach!