Resolve "Convert FluentBit to Passthrough chart"

General MR

Summary

Moving fluentbit chart to passthrough pattern

Relevant logs/screenshots

N/A

Linked Issue

#178 (closed)

Upgrade Notices

Passthrough Pattern Refactor

All upstream chart value overrides in ./chart/values.yaml will need to be shifted under the upstream key.

For example:

Previous Values:

image:
 repository: registry1.dso.mil/ironbank/opensource/fluent/fluent-bit
 pullPolicy: Always
 tag: 4.0.3

testFramework:
 enabled: false

Current Values:

upstream:
 image:
 repository: registry1.dso.mil/ironbank/opensource/fluent/fluent-bit
 pullPolicy: Always
 tag: 4.0.3

 testFramework:
 enabled: false

Please note, this change does not apply to Big Bang-added top-level keys, including: istio, networkPolicies, elasticsearch, loki, elasticsearchKibana, openshift, and additionalOuputs.