PS integration test add ISO 8601 format for datetime type (Azure#582)

* add ISO 8601 format for datetime type

Author: VasuBhog

test/Integration/SqlOutputBindingIntegrationTests.cs

@@ -110,7 +110,7 @@ public void AddProductArrayTest(SupportedLanguages lang)
         /// <param name="lang">The language to run the test against</param>
         [Theory]
         [SqlInlineData()]
-        [UnsupportedLanguages(SupportedLanguages.Java, SupportedLanguages.PowerShell)]
+        [UnsupportedLanguages(SupportedLanguages.Java)]
         public void AddProductColumnTypesTest(SupportedLanguages lang)
         {
             this.StartFunctionHost(nameof(AddProductColumnTypes), lang, true);

test/Integration/test-powershell/AddProductColumnTypes/run.ps1

@@ -11,7 +11,7 @@ Write-Host "PowerShell function with SQL Output Binding processed a request."
 # which have a property matching each of the columns in the table to upsert to.
 $req_query = @{ 
     ProductId=$Request.QUERY.productId;
-    Datetime=Get-Date -AsUTC;
+    Datetime=Get-Date -AsUTC -format s;
     Datetime2=Get-Date -AsUTC;
 };