docs(localpv): comment fixes & better documentation related to thinprovision parameter

[abuisine]

Pull Request template

Please, go through these steps before you submit a PR.

Why is this PR required? What issue does it fix?:
Fixes #560

What this PR does?:
Remove misleading comments and enrich documentation.

Does this PR require any upgrade changes?:
No

If the changes in this PR are manually verified, list down the scenarios covered::
N/A

Any additional information for your reviewer? :
N/A

Checklist:

• Fixes #
• PR Title follows the convention of <type>(<scope>): <subject>
• Has the change log section been updated?
• Commit has unit tests
• Commit has integration tests
• (Optional) Are upgrade changes included in this PR? If not, mention the issue/PR to track:
• (Optional) If documentation changes are required, which issue on https://github.com/openebs/website is used to track them:

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.53%. Comparing base (1c29ecd) to head (1b43f65).
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Additional details and impacted files

@@           Coverage Diff            @@
##           develop     #563   +/-   ##
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  Coverage    99.53%   99.53%           
========================================
  Files            1        1           
  Lines          431      431           
========================================
  Hits           429      429           
  Misses           1        1           
  Partials         1        1           

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bddtests	99.53% <ø> (ø)

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[Abhinandan-Purkait]

Hi @abuisine, can you please undo the changes on the files v1/zfsvolume.go and v1alpha1/zfsvolume.go. Those changes cannot just go in without running the manifest generation and the kubegen to generate the autogenerated code. We will take that up on a different PR as running the generators will change a few files.

LGTM, on the doc changes.

Also you might want to sign your commit for DCO to pass. Thanks

[Abhinandan-Purkait]

LGTM. Thanks @niladrih @avishnu @tiagolobocastro @sinhaashish Can we have some more reviews here?

[Abhinandan-Purkait]

@balaharish7 Please update here accordingly once this is merged.

[abuisine]

@Abhinandan-Purkait I just did, and rebased, should be good to go

[Abhinandan-Purkait]

@abuisine Thanks.