loki update to 6.46.0-bb.5

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/loki/-/blob/6.46.0-bb.5/CHANGELOG.md

Package MR

big-bang/product/packages/loki!356 (merged)

For Issue

Closes big-bang/product/packages/loki#268 (closed)

Upgrade Notices

*** Potential Breaking Change ***

Prior to this release, a Loki VirtualService (logging/loki) was always installed and would expose cluster metrics on the Istio gateway.

In order to limit what is exposed by default, Big Bang no longer installs this VirtualService by default. The logging/loki VirtualService must now be explicitly enabled if you require access to Loki's metrics through the VirtualSerivce.

This VirtualService can be enabled using the following common routes overrides values:

loki:
  values:
    routes:
      inbound:
        loki:
          enabled: true

For additional information on using Big Bang common routes and this VirtualService:

https://repo1.dso.mil/big-bang/product/packages/bb-common/-/blob/main/docs/routes/README.md

https://repo1.dso.mil/big-bang/product/packages/loki/-/blob/main/docs/IstioHardened.md?ref_type=heads#loki-virtualservice-access