eckOperator update to 2.15.0-bb.0

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/eck-operator/-/blob/2.15.0-bb.0/CHANGELOG.md

Package MR

big-bang/product/packages/eck-operator!156 (merged)

For Issue

Closes big-bang/product/packages/eck-operator#111 (closed)

Upgrade Notices

• Will perform rolling-restart/upgrade on Elastic cluster