BI-2833 - Fix security gap, only system admins to pull data across programs

[nickpalladino]

Description

Story: BI-2833

• updated /serverinfo, removed passthrough calls only available to system admins
• changed permissions on passthrough calls to only be accessible to system admins

Dependencies

• develop java-brapi-ProdServer

Testing

See acceptance criteria in card

Checklist:

• I have performed a self-review of my own code
• I have tested my code and ensured it meets the acceptance criteria of the story
• I have create/modified unit and/or integration tests to cover this change or tests are not applicable
• I have commented my code, particularly in hard-to-understand areas
• I have either updated the source of truth or arranged for update with product owner if needed https://breedinginsight.atlassian.net/wiki/spaces/BI/pages/1559953409/Source+of+Truth

[humsika]

Code looks good to me and is working as expected.