RFR: Service loading module test [v2]

[Alexandre Iline]

> A test framework for module testing will need to be developed later. Just a single test for now.

Alexandre Iline has updated the pull request incrementally with three additional commits since the last revision:

 - JTReg dir names
 - Single JTReg call for all tests.
 - Use orElseGet

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Changes:
  - all: https://git.openjdk.org/jcov/pull/37/files
  - new: https://git.openjdk.org/jcov/pull/37/files/97001ba7..b03d9d9f

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jcov&pr=37&range=01
 - incr: https://webrevs.openjdk.org/?repo=jcov&pr=37&range=00-01

  Stats: 36 lines in 2 files changed: 3 ins; 10 del; 23 mod
  Patch: https://git.openjdk.org/jcov/pull/37.diff
  Fetch: git fetch https://git.openjdk.org/jcov pull/37/head:pull/37

PR: https://git.openjdk.org/jcov/pull/37