Merge branch 'update-istio-controlplane-tag-1.15.3-bb.1' into 'master'

Istio: Split image name/tag for hook job

See merge request platform-one/big-bang/bigbang!2334

chart/values.yaml

@@ -131,7 +131,7 @@ istio:
   git:
     repo: https://repo1.dso.mil/platform-one/big-bang/apps/core/istio-controlplane.git
     path: "./chart"
-    tag: "1.15.3-bb.0"
+    tag: "1.15.3-bb.1"
 
   # -- Tetrate Istio Distribution - Tetrate provides FIPs verified Istio and Envoy software and support,
   # validated through the FIPs Boring Crypto module. Find out more from Tetrate - https://www.tetrate.io/tetrate-istio-subscription