clusterAuditor update to 1.5.0-bb.21

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/cluster-auditor/-/blob/1.5.0-bb.21/CHANGELOG.md

Package MR

big-bang/product/packages/cluster-auditor!161 (merged)

For Issue

Closes big-bang/product/packages/cluster-auditor#120 (closed)

Upgrade Notices

N/A

Closes #120 (closed)