Fix /32 validation for PrivateRange on firewall and firewall policy (#25313)

* Fixed /32 only being valid for 255.255.255.255/32. Updated firewall and firewall policy tests to test that other /32 subnets are considered valid.

* Recorded new session records for the updated tests.

* Updated the changelog

Author: ajtms

src/Network/Network.Test/ScenarioTests/AzureFirewallPolicyTests.ps1

@@ -1517,7 +1517,7 @@ function Test-AzureFirewallPolicyPrivateRangeCRUD {
     $privateRange2 = @("IANAPrivateRanges", "0.0.0.0/0", "66.92.0.0/16")
     $privateRange1 = @("3.3.0.0/24", "98.0.0.0/8","10.227.16.0/20")
     $privateRange2Translated = @("0.0.0.0/0", "66.92.0.0/16", "10.0.0.0/8", "172.16.0.0/12", "192.168.0.0/16", "100.64.0.0/10")
-    $privateRange3 = @("255.255.255.255/32")
+    $privateRange3 = @("255.255.255.255/32", "0.0.0.0/32", "1.0.0.0/32", "0.0.0.1/32")
 
     try {
 
@@ -1543,7 +1543,7 @@ function Test-AzureFirewallPolicyPrivateRangeCRUD {
         $getAzureFirewallPolicy = Get-AzFirewallPolicy -Name $azureFirewallPolicyName -ResourceGroupName $rgname
         Assert-AreEqualArray $privateRange2Translated $getAzureFirewallPolicy.PrivateRange
 
-        # Test Always SNAT
+        # Test Always SNAT and /32
         $azureFirewallPolicy.PrivateRange = $privateRange3
         Set-AzFirewallPolicy -InputObject $azureFirewallPolicy
         $getAzureFirewallPolicy = Get-AzFirewallPolicy -Name $azureFirewallPolicyName -ResourceGroupName $rgname

src/Network/Network.Test/ScenarioTests/AzureFirewallTests.ps1

@@ -1351,8 +1351,8 @@ function Test-AzureFirewallPrivateRangeCRUD {
 
     $privateRange1 = @("IANAPrivateRanges", "0.0.0.0/0", "66.92.0.0/16")
     $privateRange2 = @("3.3.0.0/24", "98.0.0.0/8","10.227.16.0/20","10.226.0.0/16")
-    $privateRange3 = @("255.255.255.255/32")
-    
+    $privateRange3 = @("255.255.255.255/32", "0.0.0.0/32", "1.0.0.0/32", "0.0.0.1/32")
+
     try {
         # Create the resource group
         $resourceGroup = New-AzResourceGroup -Name $rgname -Location $location
@@ -1377,7 +1377,7 @@ function Test-AzureFirewallPrivateRangeCRUD {
         $getAzureFirewall = Get-AzFirewall -Name $azureFirewallName -ResourceGroupName $rgname
         Assert-AreEqualArray $privateRange2 $getAzureFirewall.PrivateRange
 
-        # Test Always SNAT
+        # Test Always SNAT and /32
         $azureFirewall.PrivateRange = $privateRange3
         Set-AzFirewall -AzureFirewall $azureFirewall
         $getAzureFirewall = Get-AzFirewall -Name $azureFirewallName -ResourceGroupName $rgname