allows tagOverride for helm charts

[JBAhire]

Description

addresses hypertrace/hypertrace#55
based on: hypertrace/pinot#18

Testing

Tested with personal EKS cluster deployment by adding following lines in values.yaml for hypertrace deployment.

Works as expected.

Checklist:

• My changes generate no new warnings
• [na] I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules

[codecov]

Codecov Report

Merging #48 (2b4f00e) into main (916fef7) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main      #48   +/-   ##
=========================================
  Coverage     82.85%   82.85%           
  Complexity        2        2           
=========================================
  Files             2        2           
  Lines            35       35           
=========================================
  Hits             29       29           
  Misses            6        6           

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