Merge files from jdk8u/jdk8u121-b13 into the expected_upstream branch

List of files:
  ojluni/src/test/java/time/tck/java/time/TCKInstant.java
  ojluni/src/test/java/time/test/java/time/TestInstant.java

Generated by tools/expected_upstream/ojluni_refresh_files.py
Test: N/A
Change-Id: I9632d9b7604e4ea9698e0a4d0a543cda3c6cb756
tree: 2e8112edca1ca3ce5da3f9e4d0974a34835f1a87
  1. ojluni/
  2. tools/
  3. EXPECTED_UPSTREAM