[BB-1312] - Pulling in upstream helm chart

Updating chart/ to be based off of the upstream helm chart provided by fluent: https://github.com/fluent/helm-charts/blob/master/charts/fluent-bit/

addresses #2 (closed)

CHANGELOG.md

 # Changelog
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/), and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
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+---
+
+## [0.7.5-bb.0]
+### Changed
+- Pointing to upstream helm chart maintained by fluent team.
+- Modified hostPath mounts in templates/_pod.tpl since K3S/D clusters fail with no /etc/machine-id path