[jdk11u-dev] RFR: 8313878: Exclude two compiler/rtm/locking tests on ppc64le [v2]

[Christoph Langer]

> The test compiler/rtm/locking/TestRTMSpinLoopCount.java fails very often in JDK11 on linux ppc64le and should be excluded to reduce noise in the CI infrastructure.

Christoph Langer 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:

 - Also exclude TestRTMAbortThreshold and follow Martin's suggestion to exclude for generic-ppc64le
 - Merge remote-tracking branch 'upstream/master' into JDK-8313878
 - JDK-8313878

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Changes:
  - all: https://git.openjdk.org/jdk11u-dev/pull/2070/files
  - new: https://git.openjdk.org/jdk11u-dev/pull/2070/files/73a0616c..5d499d38

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2070&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2070&range=00-01

  Stats: 84 lines in 5 files changed: 79 ins; 0 del; 5 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2070.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2070/head:pull/2070

PR: https://git.openjdk.org/jdk11u-dev/pull/2070