Updated run() to return exitCode and make testExitCode non-static to don't use it in run()
------------- Commit messages: - fixed cp - 8298907: nsk JDI tests pass if the debuggee failed to launch Changes: https://git.openjdk.org/jdk/pull/12270/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=12270&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8298907 Stats: 367 lines in 186 files changed: 0 ins; 0 del; 367 mod Patch: https://git.openjdk.org/jdk/pull/12270.diff Fetch: git fetch https://git.openjdk.org/jdk pull/12270/head:pull/12270 PR: https://git.openjdk.org/jdk/pull/12270
