istio update to 1.21.1-bb.1
Package Merge Request
Package Changes
https://repo1.dso.mil/big-bang/product/packages/istio-controlplane/-/blob/1.21.1-bb.1/CHANGELOG.md
Package MR
big-bang/product/packages/istio-controlplane!246 (merged) https://repo1.dso.mil/big-bang/product/packages/istio-controlplane!213
For Issue
This works towards these, but doesn't close them:
Closes big-bang/product/packages/istio-controlplane#143 (closed)
Upgrade Notices
This removes the upgrade notice for Istio 1.20.4bb.2 as sidecars will not be turned on by default.