RFR JDK-8236039: JSSE Client does not accept status_request extension in CertificateRequest messages for TLS 1.3

[Jamil Nimeh]

Hi All, the golang folks have been running into an issue where our JSSE 
client treats the status_request extension in a CertificateRequest 
message from a golang server as an unknown extension and alerts.  This 
quick fix will allow the client to read and accept the extension and 
proceed.  I believe you need golang 1.13.x to see this take place.

This fix does not implement client-side OCSP stapling.  That will be an 
RFE for another day.

Bug: https://bugs.openjdk.java.net/browse/JDK-8236039

Webrev: https://cr.openjdk.java.net/~jnimeh/reviews/8236039/webrev.01/

--Jamil