Added checks 92 and 224 to skipped checks for Azure SQL MI

[VladDBA]

Hi Brent,

On Azure SQL Managed Instance the following checks should be skipped:

• 92 - drive info/space usage
• 224 - SSRS/SSAS/SSIS Installed

The errors they throw on MI:

• 92

  Running CheckId [92].
  Msg 8115, Level 16, State 8, Line 1
  Arithmetic overflow error converting numeric to data type numeric.
  The statement has been terminated.
  

• 224

  Running CheckId [224].
  Msg 40514, Level 16, State 45, Procedure xp_cmdshell, Line 1 [Batch Start Line 0]
  'xp_cmdshell' is not supported in this version of SQL Server.
  

[BrentOzar]

Thanks for the pull request! Looks good, merging into the dev branch, will be in the next release with credit to you in the release notes.