RFR [14] 8235976: Directives in WWW-Authenticate should be comma separated

[Chris Hegarty]

> On 16 Dec 2019, at 15:48, Michael McMahon <michael.x.mcmahon at oracle.com> wrote:
> 
> Could I get the following small fix reviewed please?
> 
> It is a followup to 8199849 which is already in 14.
> The fix did not include the required comma separator between parameters
> in HTTP response authentication headers.
> 
> http://cr.openjdk.java.net/~michaelm/8235976/webrev.1/

LGTM.

Maybe add the bugId to the test that has been modified.

-Chris.