fix(neuvector): properly propagate top-level definitions into package values

General MR

Summary

This MR fixes an issue with neuvector's egress templates where a top-level egress definition did not flow properly into the package's values templates.

Relevant logs/screenshots

❯ helm unittest ./chart -f ./chart/unittests/packages/neuvector/values_test.yaml

### Chart [ bigbang ] ./chart

 PASS  Package - Neuvector - Values Tests       chart/unittests/packages/neuvector/values_test.yaml

Charts:      1 passed, 1 total
Test Suites: 1 passed, 1 total
Tests:       4 passed, 4 total
Snapshot:    0 passed, 0 total
Time:        69.675122ms

Linked Issue

#3119 (closed)

Upgrade Notices

N/A