[jdk8u-dev] RFR: 8222299: [TESTBUG] move hotspot container tests to hotspot/containers [v7]

[yaqsun]

> This is a backport of JDK-8222299: [TESTBUG] move hotspot container tests to hotspot/container.
> 
> This patch has already been applied to OracleJDK8.
> 
> This backport has resolved the conflict about hotspot/test/TEST.groups. doc/testing.html and doc/testing.md do not exist in 8u.

yaqsun has updated the pull request incrementally with one additional commit since the last revision:

  del tab

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Changes:
  - all: https://git.openjdk.org/jdk8u-dev/pull/488/files
  - new: https://git.openjdk.org/jdk8u-dev/pull/488/files/df7831f2..5c1c4a52

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=488&range=06
 - incr: https://webrevs.openjdk.org/?repo=jdk8u-dev&pr=488&range=05-06

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk8u-dev/pull/488.diff
  Fetch: git fetch https://git.openjdk.org/jdk8u-dev.git pull/488/head:pull/488

PR: https://git.openjdk.org/jdk8u-dev/pull/488