Add support for AtStartup & AtLogOn with Grani_ScheduledTask Resource.

[guitarrapc]

Description

Add support for AtStartup & AtLogOn for Grani_ScheduledTask Resource.

ToDo

• [x] Update mof
• [x] Add psm1 parameter for $AtStartup & $AtLogOn
• [x] [BreakingChange]Change mof Schema for ScheduledTimeSpand / ScheduledDuration to RepetitionInterval and RepetitionDuration.
• [x] Fix some small issues with debug message.
• [x] Add $false for Defaut value of parameter Disable.
• [x] Update .psm1 for parameters and validation
• [x] Pass Pester test
  • PowerShell v4
• [x] Test-DscResource works fine
  • PowerShell v4
• [x] Get-DscResource works fine
  • PowerShell v4

    Remark

Support and test for PowerShell v4 only. Current Windows 10 TH2 build 1511 ScheduleTask Module is broken and never works.

Related Issue

https://github.com/guitarrapc/DSCResources/issues/40