Correct location handling, fix tests and consistency

src/Resources/Policy.Autorest/custom/Get-AzPolicyAssignment.ps1

@@ -205,7 +205,7 @@ process {
             switch ($resolved.ScopeType) {
                 'mgName' {
                     if ($IncludeDescendent) {
-                        throw 'The -IncludeDescendent switch is not supported for management group scopes.'
+                        throw 'The IncludeDescendent switch is not supported for management group scopes.'
                     }
 
                     $calledParameterSet = 'List2'

src/Resources/Policy.Autorest/custom/Get-AzPolicyDefinition.ps1

@@ -189,7 +189,7 @@ process {
 
     # handle disallowed cases not handled by PS parameter attributes
     if ($PSBoundParameters['SubscriptionId'] -and $PSBoundParameters['ManagementGroupName']) {
-        throw 'Only -ManagementGroupName or -SubscriptionId can be provided, not both.'
+        throw 'Only ManagementGroupName or SubscriptionId can be provided, not both.'
     }
 
     # handle specific parameter sets

src/Resources/Policy.Autorest/custom/Get-AzPolicyExemption.ps1

@@ -207,7 +207,7 @@ process {
             switch ($resolved.ScopeType) {
                 'mgName' {
                     if ($IncludeDescendent) {
-                        throw 'The -IncludeDescendent switch is not supported for management group scopes.'
+                        throw 'The IncludeDescendent switch is not supported for management group scopes.'
                     }
 
                     $calledParameterSet = 'List3'

src/Resources/Policy.Autorest/custom/Get-AzPolicySetDefinition.ps1

@@ -182,7 +182,7 @@ process {
 
     # handle disallowed cases not handled by PS parameter attributes
     if ($PSBoundParameters['SubscriptionId'] -and $PSBoundParameters['ManagementGroupName']) {
-        throw 'Only -ManagementGroupName or -SubscriptionId can be provided, not both.'
+        throw 'Only ManagementGroupName or SubscriptionId can be provided, not both.'
     }
 
     # handle specific parameter sets