Merge pull request #517 from microsoftgraph/features/CAE

Add CAE Support

Author: peombwa

src/Authentication/Authentication.Core/Utilities/AuthenticationHelpers.cs

@@ -71,6 +71,7 @@ public static IAuthenticationProvider GetAuthProvider(IAuthContext authContext)
                         .Create(authContext.ClientId)
                         .WithTenantId(authContext.TenantId)
                         .WithAuthority(authorityUrl)
+                        .WithClientCapabilities(new[] { "cp1" })
                         .Build();
 
                         ConfigureTokenCache(publicClientApp.UserTokenCache, authContext);