istioEgressGateway update to 0.1.5-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/istio-egress-gateway/-/blob/0.1.5-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/istio-egress-gateway!22 (merged)

For Issue

Closes big-bang/product/packages/istio-egress-gateway#21 (closed)

Upgrade Notices

N/A