RFR: 8282170: JVMTI SetBreakpoint metaspace allocation test

[Aleksey Shipilev]

There are few bugs in SetBreakpoint when it reaches for metaspace allocation, notably [JDK-8214992](https://bugs.openjdk.java.net/browse/JDK-8214992) and [JDK-8264149](https://bugs.openjdk.java.net/browse/JDK-8264149). This adds the test that exercises the metaspace allocation paths.

Additional testing:
 - [x] New test on Linux x86_64 fastdebug
 - [x] New test on Linux x86_64 release
 - [x] New test with [JDK-8264149](https://bugs.openjdk.java.net/browse/JDK-8264149) reverted fails on Linux x86_64 release

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Commit messages:
 - Fix

Changes: https://git.openjdk.java.net/jdk/pull/7554/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7554&range=00
  Issue: https://bugs.openjdk.java.net/browse/JDK-8282170
  Stats: 1127 lines in 2 files changed: 1127 ins; 0 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7554.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7554/head:pull/7554

PR: https://git.openjdk.java.net/jdk/pull/7554