Patches for chart 1.19.0rc2

[tpanza]

As discussed here: #61268 (comment) , the 1.19.0 RC2 chart would not render with my values overrides (currently used with chart 1.18), without the below patches.

1. chart/templates/api-server/api-server-service.yaml: Emit valid YAML by ensuring that the dash is on the same line as the mapping
2. chart/templates/configmaps/configmap.yaml: Avoid Unquoted config values
3. chart/templates/_helpers.yaml:
   • Insert list elements at right level
   • Use proper boolean casing

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[jscheffl]

Thanks for the fixes... from point of code looks reasonable - let's have CI green.