RFR: 8263753: two new tests from JDK-8261671 fail with "Error. can not find ClassFileInstaller in test directory or libraries"

[Vladimir Kozlov]

These new tests were not adapted to JDK-8263412 changes. The failure is the same as JDK-8263549.

Applied fix from JDK-8263549: "replaces ClassFileInstaller w/ jdk.test.lib.helpers.ClassFileInstaller in failing tests descriptions to ensure we won't get split testlibrary".

Tested tier1, hs-tier2 (where tests failed), running failing tests

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Commit messages:
 - 8263753: two new tests from JDK-8261671 fail with "Error. can not find ClassFileInstaller in test directory or libraries"

Changes: https://git.openjdk.java.net/jdk/pull/3054/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=3054&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8263753
  Stats: 2 lines in 2 files changed: 0 ins; 0 del; 2 mod
  Patch: https://git.openjdk.java.net/jdk/pull/3054.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/3054/head:pull/3054

PR: https://git.openjdk.java.net/jdk/pull/3054