instantiate authmanager in daas DYN-7925

[mjkkirschner]

Purpose

Now that daas implements its own auth provider and attempts to use it, we need an Authentication Manager so that the auth provider can be referenced.

Declarations

Check these if you believe they are true

• The codebase is in a better state after this PR
• Is documented according to the standards
• The level of testing this PR includes is appropriate
• User facing strings, if any, are extracted into *.resx files
• All tests pass using the self-service CI.
• Snapshot of UI changes, if any.
• Changes to the API follow Semantic Versioning and are documented in the API Changes document.
• This PR modifies some build requirements and the readme is updated
• This PR contains no files larger than 50 MB

Release Notes

Fix for missing auth provider in daas