SecurityOption/AccountPolicy: Add validation attributes to parameters

[aydeisen]

Pull Request (PR) description

Add ValidateRange and ValidateSet attributes to appropriate parameters in MSFT_AccountPolicy.psm1 and MSFT_SecurityOption.psm1

Add ValueMap to MSFT_SecurityOption.schema.mof for appropriate string properties

This Pull Request (PR) fixes the following issues

Fixes #80

Task list

• [ ] Added an entry under the Unreleased section of the change log in the README.md. Entry should say what was changed, and how that affects users (if applicable).
• [ ] Resource documentation added/updated in README.md.
• [X] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [ ] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [ ] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [ ] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [X] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[codecov-io]

Codecov Report

Merging #112 into dev will not change coverage. The diff coverage is 100%.

@@        Coverage Diff         @@
##           dev   #112   +/-   ##
==================================
  Coverage   89%    89%           
==================================
  Files        5      5           
  Lines      493    493           
==================================
  Hits       443    443           
  Misses      50     50

[codecov-io]

Codecov Report

Merging #112 into dev will not change coverage. The diff coverage is 100%.

@@        Coverage Diff         @@
##           dev   #112   +/-   ##
==================================
  Coverage   89%    89%           
==================================
  Files        5      5           
  Lines      493    493           
==================================
  Hits       443    443           
  Misses      50     50

[stale[bot]]

Labeling this pull request (PR) as abandoned since it has gone 14 days or more since the last update. An abandoned PR can be continued by another contributor. The abandoned label will be removed if work on this PR is taken up again.

[gaelcolas]

I've disabled the Stale bot for now, will also update the labels. Could you rebase your commits off the latest version, please :)

[gaelcolas]

Thanks, hopefully it'll pass the test and I'll get back to it in the next few days unless @jcwalker beats me to it. ;)