[jdk11u-dev] RFR: 8236413: AbstractConnectTimeout should tolerate both NoRouteToHostException and UnresolvedAddressException

[Aleksey Shipilev]

Backporting this for `11.0.14-oracle` parity. 

Additional testing:
 - [x] `java/net/httpclient` tests still pass

-------------

Commit messages:
 - Backport fab6158c198dd6b363bfb36e5a18107214bb134d

Changes: https://git.openjdk.java.net/jdk11u-dev/pull/210/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk11u-dev&pr=210&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8236413
  Stats: 14 lines in 1 file changed: 7 ins; 0 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk11u-dev/pull/210.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk11u-dev pull/210/head:pull/210

PR: https://git.openjdk.java.net/jdk11u-dev/pull/210