New behat phpunit options #511

Job	Run time
CI test (make validate)	35s
Code coverage (codecov)	34s
Build moodle-plugin-ci.phar	32s
Integration tests (8.2, master)	5m 50s
Integration tests (8.2, MOODLE_403_STABLE)	5m 15s
Integration tests (8.2, MOODLE_402_STABLE)	6m 42s
Integration tests (8.1, MOODLE_401_STABLE)	8m 36s
Integration tests (8.0, MOODLE_400_STABLE)	5m 42s
Integration tests (8.0, MOODLE_311_STABLE)	6m 6s
Integration tests (7.4, MOODLE_310_STABLE)	5m 56s
Integration tests (7.4, MOODLE_39_STABLE)	5m 16s
Integration tests (7.4, MOODLE_38_STABLE)	7m 50s
Integration tests (PHAR) (8.2, master)	5m 13s
Integration tests (PHAR) (8.1, MOODLE_403_STABLE)	5m 10s
Integration tests (PHAR) (8.0, MOODLE_401_STABLE)	5m 45s
Integration tests (PHAR) (7.4, MOODLE_400_STABLE)	5m 1s
	1h 20m 3s

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