Update mlflow 1 server app template and support mlflow 2 server.

[huaichehuang]

Signed-off-by: Dennis Huang haicha.tw@gmail.com

PrimeHub App template feature: Update mlflow 1 server app template and support mlflow 2 server

PR checklist

• [X] Ensure you have added or ran the appropriate tests for your PR.

What type of PR is this? enhancement

What this PR does / why we need it: Update mlflow 1 server app template and support mlflow 2 server.

Which issue(s) this PR fixes: N/A

Special notes for your reviewer: N/A

Does this PR introduce a user-facing change?: NONE

Assignees @huaichehuang