v5.1.0

[v5.1.0]

Fixed

• Fixed pipeline build step by limiting Gitversion to 5.* version.
• Change default integration test region from East US to Australia East due
  to quota limitations.
• Removed MacOS-11 testing from build pipeline because it is no longer supported
  by Microsoft managed Azure DevOps images.
• Changed integration tests to display the removal of the Cosmos DB account
  in the teardown phase to ensure the account is removed after the tests are
  completed.
• Updated collection and database autoscale minimum from 4000 to
  1000 - Fixes Issue #493.
• Changed integration tests to attempt to clean up the Cosmos DB resource group
  if it is not removed by the teardown phase - Fixes Issue #494.