remove exposing of ports since the service is headless

[yashbhutwala]

Signed-off-by: Yash Bhutwala [email protected]

PR Checklist

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• [X] Chart Version bumped
• [X] Chart packaged and index updated (you can use ./release)
• [X] CHANGELOG.md updated
• [X] Variables and other changes are documented in the README.md

What this PR does / why we need it: Since a headless service is specified and therefore DNS handles the request, rather the kube-proxy, there is no need to specify exposing the ports. If DNS is being used, all container ports are open for communication 😄

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

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