feat: add UltraSSD support

[andyzhangx]

Reason for Change:

This PR adds UltraSSD support for both AgentPool and master node, details about UltraSSD

Issue Fixed:

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Notes:

cc @kkmsft

[andyzhangx]

/azp run pr-e2e

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[codecov]

Codecov Report

Merging #2905 into master will decrease coverage by 0.01%.
The diff coverage is 43.75%.

@@            Coverage Diff             @@
##           master    #2905      +/-   ##
==========================================
- Coverage   72.49%   72.48%   -0.02%     
==========================================
  Files         141      141              
  Lines       25847    25863      +16     
==========================================
+ Hits        18739    18746       +7     
- Misses       6021     6027       +6     
- Partials     1087     1090       +3     

Impacted Files	Coverage Δ
pkg/api/types.go	95.63% <ø> (ø)
pkg/api/vlabs/types.go	73.93% <ø> (ø)
pkg/engine/virtualmachinescalesets.go	80.58% <0.00%> (-0.85%)	⬇️
pkg/engine/virtualmachines.go	80.66% <50.00%> (-0.45%)	⬇️
pkg/api/converterfromapi.go	93.78% <100.00%> (+0.02%)	⬆️
pkg/api/convertertoapi.go	93.59% <100.00%> (+0.02%)	⬆️

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[jackfrancis]

Thanks @andyzhangx! There appear to be missing implementations for both agentPoolProfile and masterProfile. Here's a recent PR for reference that added a property to both master and agent type definitions:

#2880

We want to make sure we similarly update both configuration objects for this changes as well, on these vectors:

• api and vlabs type definitions
• converter "to"
• converter "from"
• validation, if appropriate
• defaults enforcement
• ARM template composition
• documentation

[andyzhangx]

• api and vlabs type definitions
  done
• converter "to"
  done
• converter "from"
  done
• validation, if appropriate
  not necessary since it's a bool value
• defaults enforcement
  default is false which is compatible
• ARM template composition
  what is this? I have already run "make build" before commit, no new generated files in my branch.
• documentation
  done

@jackfrancis PTAL

[andyzhangx]

@jackfrancis PTAL

[jackfrancis]

/lgtm

Thanks @andyzhangx

[acs-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: andyzhangx, jackfrancis

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[jackfrancis]

@yangl900 @xuto2 @palma21 FYI UltraSSD support has landed in AKS Engine w/ functional E2E test coverage

@ritazh @craiglpeters FYI

[andyzhangx]

@yangl900 @xuto2 @palma21 FYI UltraSSD support has landed in AKS Engine w/ functional E2E test coverage

@ritazh @craiglpeters FYI

thanks for the code review, this feature is required by some customers, next we need to integrate into AKS.