update new-azautoscaleprofile to accept rule as empty list (#13586)

Co-authored-by: Dingmeng Xue <[email protected]>

Author: VeryEarly

src/Monitor/Monitor/Autoscale/NewAzureRmAutoscaleProfileCommand.cs

@@ -126,7 +126,7 @@ public class NewAzureRmAutoscaleProfileCommand : MonitorCmdletBase
         [Parameter(ParameterSetName = AddAutoscaleProfileNoScheduleParamGroup, Mandatory = true, ValueFromPipelineByPropertyName = true, HelpMessage = "The rules for the setting")]
         [Parameter(ParameterSetName = AddAutoscaleProfileFixDateParamGroup, Mandatory = true, ValueFromPipelineByPropertyName = true, HelpMessage = "The rules for the setting")]
         [Parameter(ParameterSetName = AddAutoscaleProfileRecurrenceParamGroup, Mandatory = true, ValueFromPipelineByPropertyName = true, HelpMessage = "The rules for the setting")]
-        [ValidateNotNullOrEmpty]
+        [ValidateNotNull]
         public List<Management.Monitor.Management.Models.ScaleRule> Rule { get; set; }
 
         #endregion

src/Monitor/Monitor/ChangeLog.md

@@ -19,6 +19,7 @@
 -->
 
 ## Upcoming Release
+* Changed parameter `Rule` of `New-AzAutoscaleProfile` to accept empty list. [#12903]
 * Added new cmdlets to support creating diagnostic settings more flexible:
     * `Get-AzDiagnosticSettingCategory`
     * `New-AzDiagnosticSetting`