Merge ExtendedSocketOptions from jdk11u/jdk-11.0.13-ga into the expected_upstream branch

List of files:
  ojluni/src/main/java/sun/net/ext/ExtendedSocketOptions.java

Generated by tools/expected_upstream/ojluni_refresh_files.py
Test: N/A
Change-Id: I14f96fdaa195e90ba817ceefd5aacf2fdae73054
tree: c41a8442ecdef520d4c6823f551d1326589e993c
  1. ojluni/
  2. tools/
  3. EXPECTED_UPSTREAM