RFR: 7904015: --verify-exclude fails to abort the test run when discovering failures [v2]

[Ludvig Janiuk]

> Exit after discovering errors in exclude files

Ludvig Janiuk has updated the pull request incrementally with one additional commit since the last revision:

  Add test

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Changes:
  - all: https://git.openjdk.org/jtreg/pull/265/files
  - new: https://git.openjdk.org/jtreg/pull/265/files/4fa2e071..9095c8e1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jtreg&pr=265&range=01
 - incr: https://webrevs.openjdk.org/?repo=jtreg&pr=265&range=00-01

  Stats: 15 lines in 1 file changed: 14 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jtreg/pull/265.diff
  Fetch: git fetch https://git.openjdk.org/jtreg.git pull/265/head:pull/265

PR: https://git.openjdk.org/jtreg/pull/265