[jdk11u-dev] RFR: 8219628: [TESTBUG] javadoc/doclet/InheritDocForUserTags fails with -othervm

[luchenlin]

I backport this for parity with 11.0.20-oracle.

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Commit messages:
 - Backport 6b79655b447d4a41fca490c74df46a596f92d549

Changes: https://git.openjdk.org/jdk11u-dev/pull/1930/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=1930&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8219628
  Stats: 3 lines in 2 files changed: 1 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/1930.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/1930/head:pull/1930

PR: https://git.openjdk.org/jdk11u-dev/pull/1930