first draft- updates in dataset_loader to move from api 2.x to 3.x

[ragen14]

What does this PR (Pull Request) do?

• [x] This PR fixes #6726

Which Traffic Control components are affected by this PR?

• Ansible roles

Does not require documentation, updating roles to be compatible with API 3.0 endpoints

What is the best way to verify this PR?

This PR needs to be verified using Ansible implementation playbooks that leverage roles in infrastructure/ansible

If this is a bug fix, what versions of Traffic Control are affected?

The following criteria are ALL met by this PR

• [x] This PR includes tests OR I have explained why tests are unnecessary
• [x] This PR includes documentation OR I have explained why documentation is unnecessary
• [x] This PR includes an update to CHANGELOG.md OR such an update is not necessary
• [x] This PR includes any and all required license headers
• [x] This PR DOES NOT FIX A SERIOUS SECURITY VULNERABILITY (see the Apache Software Foundation's security guidelines for details)

Additional Information

[mitchell852]

should this be closed @ragen14 @zrhoffman