RFR: 7904110: IDEA plugin: Update plugin for new message format [v2]

[Jorn Vernee]

> The JUnit output was updated to include a timestamp in https://github.com/openjdk/jtreg/commit/470718a0637fbfd9a883de66e7955a4c26e05760
> 
> This patch updates the parser in the idea plugin to be able to handle the timestamps.

Jorn Vernee has updated the pull request incrementally with one additional commit since the last revision:

  Use regex + fix parsing of SKIPPED tests

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

Changes:
  - all: https://git.openjdk.org/jtreg/pull/300/files
  - new: https://git.openjdk.org/jtreg/pull/300/files/4d22c4dc..b535ad74

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jtreg&pr=300&range=01
 - incr: https://webrevs.openjdk.org/?repo=jtreg&pr=300&range=00-01

  Stats: 49 lines in 1 file changed: 21 ins; 10 del; 18 mod
  Patch: https://git.openjdk.org/jtreg/pull/300.diff
  Fetch: git fetch https://git.openjdk.org/jtreg.git pull/300/head:pull/300

PR: https://git.openjdk.org/jtreg/pull/300