[11u] RFR: 8249159: Downport test rework for SSLSocketTemplate from 8224650

[Lindenmaier, Goetz]

Hi,

I would like to bring this test rework from 14 to 11. 
It is part of https://bugs.openjdk.java.net/browse/JDK-8224650 .
8224650 contains the rework of SSLSocketTemplates.java and 
adds a new test.

In the old version of SSLSocketTemplates.java certificates, names and keys 
are held in separate arrays that must correlate by indexes correctly. The new 
version uses enums to keep common information in one place. The new 
version is much easier to maintain. Also, downports that just add new enums 
are easier to handle.

The new test NamedGroupsWithCipherSuite.java does not pass in 11 because 
the feature tested (JDK-8171279) is only in 13.

I would like to downport the rework because it makes JDK-8246330 apply 
clean. I do not want to downport the new test as it fails. Therefore I opened 
an Enhancement issue of it's own for this, https://bugs.openjdk.java.net/browse/JDK-8249159 .

Please review this webrev:
http://cr.openjdk.java.net/~goetz/wr20/8249159-rework_SSLSocketTemplate-jdk11/01/
It contains the changes of SSLSocketTemplate from JDK-8224650. They applied clean.
It does not contain the new test.

SSLSocketTemplate.java passes with this test.

Best regards,
  Goetz.