[jdk11u-dev] RFR: 8212045: Add back the tests that were removed from HashesTest.java and AddExportsTest.java [v3]

[luchenlin]

> I backport this for parity with 11.0.20-oracle.
> Add two tests back, MacOS and SAP nightly testing passed.

luchenlin has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'openjdk:master' into andrewLulu_backport_8212045
 - update test case to fix fail
 - Backport 1226dcbcfe0d1c074d9b27c58d509bd73a138919

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

Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/1905/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/1905/files/3b7bc045..91743b22

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1905&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1905&range=01-02

  Stats: 1328 lines in 31 files changed: 1156 ins; 35 del; 137 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1905.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/1905/head:pull/1905

PR: https://git.openjdk.org/jdk11u-dev/pull/1905