[HELM] .gitignore should include helm generated files

[walterddr]

*.lock and charts/* are generated files when running helm commands.

[codecov-commenter]

Codecov Report

Merging #8728 (ddc2e78) into master (b672af1) will increase coverage by 6.87%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #8728      +/-   ##
============================================
+ Coverage     62.81%   69.69%   +6.87%     
- Complexity     4556     4614      +58     
============================================
  Files          1679     1730      +51     
  Lines         88125    90341    +2216     
  Branches      13198    13442     +244     
============================================
+ Hits          55354    62961    +7607     
+ Misses        28801    23011    -5790     
- Partials       3970     4369     +399     

Flag	Coverage Δ
integration1	26.91% <ø> (?)
integration2	25.28% <ø> (?)
unittests1	66.21% <ø> (+0.02%)	⬆️
unittests2	14.23% <ø> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...che/pinot/segment/spi/index/reader/Dictionary.java	82.14% <0.00%> (-13.70%)	⬇️
...t/local/segment/index/readers/FloatDictionary.java	91.66% <0.00%> (-8.34%)	⬇️
.../local/segment/index/readers/DoubleDictionary.java	91.66% <0.00%> (-8.34%)	⬇️
...ders/forward/VarByteChunkMVForwardIndexReader.java	93.05% <0.00%> (-2.78%)	⬇️
...g/apache/pinot/spi/utils/IngestionConfigUtils.java	73.33% <0.00%> (-2.73%)	⬇️
...ata/manager/offline/DimensionTableDataManager.java	82.14% <0.00%> (-2.48%)	⬇️
...r/api/resources/PinotIngestionRestletResource.java	55.26% <0.00%> (-1.15%)	⬇️
...org/apache/pinot/core/common/ObjectSerDeUtils.java	89.57% <0.00%> (-0.82%)	⬇️
.../aggregation/function/ModeAggregationFunction.java	88.10% <0.00%> (-0.55%)	⬇️
...he/pinot/segment/local/utils/SegmentPushUtils.java	12.70% <0.00%> (-0.22%)	⬇️
... and 421 more

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