[BUG] Azure.Security.KeyVault.Secrets preview2 - Set(Secret) does not properly store Expires and NotBefore dateTimes

[KSchlobohm]

Describe the bug
Created a new secret and then set the DateTimeOffset for the Expires and NotBefore properties. Reviewed the data in the Azure portal and saw that the date in the portal does not match the date retrieved from the SDK.

Exception or Stack Trace

• N/A

To Reproduce

1. Use supporting documentation to setup a new keyvault
2. Follow the steps for creating a new Secret("mySecret","myValue")
3. Set the properites on the new Secret object for Expires and NotBefore
4. Save the object using the SecretClient.Set method
5. Get the object using the SecretClient.Get method
6. Observed: The properties on the retrieved object do not match the results displayed in the Azure portal. The azure portal shows the secret will Expire in the year 51703

Code Snippet

            SecretClient client = new SecretClient(
                vaultUri: new Uri("https://ux-bash-keyvault.vault.azure.net/"),
                credential: new DefaultAzureCredential());

            // Create a new secret using the secret client
            var newSecret = new Secret("mySecret", "newSecret");
            newSecret.Expires = new DateTimeOffset(DateTime.Now.AddDays(50));
            newSecret.NotBefore = new DateTimeOffset(DateTime.Now.AddDays(49));
            var newSecretResponse = client.Set(newSecret);
            Secret getNewSecretResponse = client.Get(newSecret.Name);
            Console.WriteLine("New Secret secret.Value: " + getNewSecretResponse.Name);
            Console.WriteLine("New Secret secret.Version: " + getNewSecretResponse.Version);
            Console.WriteLine("New Secret secret.Expires: " + getNewSecretResponse.Expires);
            Console.WriteLine("New Secret secret.NotBefore: " + getNewSecretResponse.NotBefore);

Expected behavior
Expecting the Date in the Azure portal to match the date returned by the library.

Screenshots

Setup (please complete the following information):

• OS: [Windows 10]
• IDE : [Visual Studio 2019]
• Version of the Library used: Azure.Security.KeyVault.Secrets -Version 4.0.0-preview.2

Information Checklist
Kindly make sure that you have added all the following information above and checkoff the required fields otherwise we will treat the issuer as an incomplete report

• Bug Description Added
• Repro Steps Added
• Setup information Added

[KSchlobohm]

Looks like the link to the KeyVault Readme is changing with regard to the link for Steps to Reproduce.

[AlexGhiondea]

@KSchlobohm thanks for pointing this out! We'll take a look at this!