New behat phpunit options #514

Job	Run time
CI test (make validate)	33s
Code coverage (codecov)	22s
Build moodle-plugin-ci.phar	44s
Integration tests (8.2, master)	5m 27s
Integration tests (8.2, MOODLE_403_STABLE)	5m 13s
Integration tests (8.2, MOODLE_402_STABLE)	5m 20s
Integration tests (8.1, MOODLE_401_STABLE)	6m 5s
Integration tests (8.0, MOODLE_400_STABLE)	7m 18s
Integration tests (8.0, MOODLE_311_STABLE)	8m 18s
Integration tests (7.4, MOODLE_310_STABLE)	5m 18s
Integration tests (7.4, MOODLE_39_STABLE)	6m 5s
Integration tests (7.4, MOODLE_38_STABLE)	5m 24s
Integration tests (PHAR) (8.2, master)	8m 2s
Integration tests (PHAR) (8.1, MOODLE_403_STABLE)	5m 3s
Integration tests (PHAR) (8.0, MOODLE_401_STABLE)	7m 16s
Integration tests (PHAR) (7.4, MOODLE_400_STABLE)	7m 45s
	1h 24m 13s

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