New resource and various bug fixes

[ykuijs]

Pull Request (PR) description

This PR adds the SPSearchCrawlDatabase resource, adds extra troubleshooting information, implements export logic for SPShellAdmin, increases export requirement to ReverseDsc v2.0.0.11 and fixes several bugs.

This Pull Request (PR) fixes the following issues

• Fixes #493
• Fixes #1404
• Fixes #1389

Task list

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

---

This change is 

[ykuijs]

@NikCharlebois Up for a review?

[codecov[bot]]

Codecov Report

Merging #1406 (0036a0f) into master (f40808f) will decrease coverage by 0%. The diff coverage is 61%.

@@           Coverage Diff           @@
##           master   #1406    +/-   ##
=======================================
- Coverage      84%     84%    -1%     
=======================================
  Files         143     145     +2     
  Lines       22377   22614   +237     
=======================================
+ Hits        18901   19041   +140     
- Misses       3476    3573    +97     

Impacted Files	Coverage Δ
...s/SharePointDsc.Reverse/SharePointDsc.Reverse.psm1	7% <0%> (-1%)	:arrow_down:
...Modules/SharePointDsc.ShellAdmin/SPShellAdmin.psm1	4% <4%> (ø)
...sources/MSFT_SPShellAdmins/MSFT_SPShellAdmins.psm1	59% <39%> (-6%)	:arrow_down:
...Modules/SharePointDsc.Util/SharePointDsc.Util.psm1	49% <42%> (+<1%)	:arrow_up:
...earchCrawlDatabase/MSFT_SPSearchCrawlDatabase.psm1	91% <91%> (ø)
...rchIndexPartition/MSFT_SPSearchIndexPartition.psm1	95% <95%> (+<1%)	:arrow_up:
...FT_SPSearchServiceApp/MSFT_SPSearchServiceApp.psm1	94% <100%> (+<1%)	:arrow_up: