RFR: 8349501: Relocate supporting classes in security/testlibrary to test/lib/jdk tree [v2]

[Jamil Nimeh]

> This takes a few test classes and moves them away from their current location in `test/jdk/java/security/testlibrary` to `test/lib/jdk/test/lib/security`, grouping them together with many other existing test utility classes.  It also changes the dependent security tests to point at the new locations for these classes, as needed.

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

  Remove unneeded testlibrary references and minor cleanup

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Changes:
  - all: https://git.openjdk.org/jdk/pull/23531/files
  - new: https://git.openjdk.org/jdk/pull/23531/files/f5e2ca1c..935324ba

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=23531&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=23531&range=00-01

  Stats: 16 lines in 6 files changed: 2 ins; 8 del; 6 mod
  Patch: https://git.openjdk.org/jdk/pull/23531.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/23531/head:pull/23531

PR: https://git.openjdk.org/jdk/pull/23531