[jdk17u-dev] RFR: 8284047: Harmonize/Standardize the SSLSocket/SSLEngine/SSLSocketSSLEngine test templates

[Goetz Lindenmaier]

I backport this for parity with 17.0.10-oracle.

test/jdk/javax/net/ssl/ALPN/SSLServerSocketAlpnTest.java
test/jdk/javax/net/ssl/ALPN/SSLSocketAlpnTest.java
Copyright.
Deleting a larger block failed because 17 calls initCause(remote) where the original change calls addSuppressed(remote);

test/jdk/javax/net/ssl/templates/SSLSocketSSLEngineTemplate.java
This could not be deleted because of the same difference mentioned above.

test/jdk/javax/net/ssl/templates/SSLSocketTemplate.java
Copyright.

These difference are all because 8282723: Add constructors taking a cause to JSSE exceptions
is not in 17.  I did not find a usage of addSuppressed() in the new code, so it should work without further adaptions.
Ran all tests modified, passing.

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Commit messages:
 - Backport 824a5e4c605d4aee55252bce5364fa01de525e1b

Changes: https://git.openjdk.org/jdk17u-dev/pull/1849/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=1849&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8284047
  Stats: 4407 lines in 23 files changed: 1004 ins; 3076 del; 327 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/1849.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev.git pull/1849/head:pull/1849

PR: https://git.openjdk.org/jdk17u-dev/pull/1849