Fix vault prometheus monitoring

Package Merge Request

Package Changes

Fix Prometheus monitoring for Vault.

Package MR

https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/vault/-/merge_requests/53
https://repo1.dso.mil/platform-one/big-bang/apps/core/monitoring/-/merge_requests/149

For Issue

Closes https://repo1.dso.mil/platform-one/big-bang/apps/sandbox/vault/-/issues/25