[OpenJDK 2D-Dev] RFR: 8255710: Opensource unit/regression tests for CMM

[Sergey Bylokhov]

A few tests for the CMM moved to the open repo.

-------------

Commit messages:
 - Initial fix

Changes: https://git.openjdk.java.net/jdk/pull/2012/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=2012&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8255710
  Stats: 457 lines in 8 files changed: 457 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/2012.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/2012/head:pull/2012

PR: https://git.openjdk.java.net/jdk/pull/2012