twistlock update to 0.15.0-bb.3

Package Merge Request

Package Changes

https://repo1.dso.mil/big-bang/product/packages/twistlock/-/blob/0.15.0-bb.3/CHANGELOG.md

Package MR

big-bang/product/packages/twistlock!139 (merged)

For Issue

Closes big-bang/product/packages/twistlock#95 (closed)

Upgrade Notices

A Sidecar resource has been added to the Twistlock namespace that disallows egress to endpoints that are not part of the Istio service registry (a.k.a REGISTRY_ONLY). The outboundTrafficPolicy.mode in the Sidecar can be configured, however, to be something other than REGISTRY_ONLY if desired by setting istio.hardened.outboundTrafficPolicyMode. This provides a redundant layer of network security in addition to NetworkPolicies. This Sidecar is disabled by default but can be enabled by setting istio.enabled: true and istio.hardened.enabled: true.

Additionally, custom ServiceEntries can be created by populating the istio.hardened.customServiceEntries list.