404 allocation control resource quotas permissions

[kthare10]

• Support for maintaining usage allocation for various resources
• Also, has code to enforce the limits but is currently disabled
• How QuotaMgr Controls Allocations
  • When a user requests resources (e.g., VM, container, FPGA, etc.):
    • enforce_quota_limits checks if the requested resources fit within available quotas.
    • If within limits, the request proceeds; otherwise, it is denied with an explanation.
  • When a reservation is created or modified:
    • update_quota logs the resource allocation.
    • The resource usage is updated to reflect the newly allocated duration.
  • When a reservation is deleted or expires:
    • update_quota returns unused resource hours to the available quota.
    • Prevents over-allocation and ensures fairness.