Fix neuvector egress definition propagation

Motivation

Neuvector's values templates don't flow top-level netpol definitions into package-level netpol definitions. This should be corrected to ensure the definition flow behavior works as intended.

Acceptance Criteria

• The top-level networkPolicies.(ingress|egress).definitions flow correctly into the package
• If a user does not set a kubeAPI definition at the bb top-level, one must be created from the existing top-level controlPlaneCidr and vpcCidr values