Fix unit tests in auth_plugin_test.php #59

Job	Run time
ci / check if job needs to run	5s
ci / prepare test matrix	14s
ci / MOODLE_310_STABLE - pgsql - php 7.2 - auth_userkey	3m 4s
ci / MOODLE_311_STABLE - mariadb - php 7.3 - auth_userkey	2m 53s
ci / MOODLE_33_STABLE - mariadb - php 7.1 - auth_userkey	3m 10s
ci / MOODLE_34_STABLE - pgsql - php 7.1 - auth_userkey	2m 23s
ci / MOODLE_35_STABLE - mariadb - php 7.1 - auth_userkey	3m 14s
ci / MOODLE_35_STABLE - pgsql - php 7.1 - auth_userkey	2m 34s
ci / MOODLE_35_STABLE - mariadb - php 7.2 - auth_userkey	2m 58s
ci / MOODLE_35_STABLE - pgsql - php 7.2 - auth_userkey	2m 26s
ci / MOODLE_36_STABLE - mariadb - php 7.1 - auth_userkey	3m 2s
ci / MOODLE_37_STABLE - pgsql - php 7.2 - auth_userkey	2m 54s
ci / MOODLE_38_STABLE - mariadb - php 7.3 - auth_userkey	3m 29s
ci / MOODLE_39_STABLE - mariadb - php 7.2 - auth_userkey	3m 8s
ci / MOODLE_39_STABLE - pgsql - php 7.2 - auth_userkey	2m 57s
ci / MOODLE_39_STABLE - mariadb - php 7.3 - auth_userkey	3m 10s
ci / MOODLE_39_STABLE - pgsql - php 7.3 - auth_userkey	2m 58s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - auth_userkey	2m 57s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - auth_userkey	3m 0s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - auth_userkey	3m 18s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - auth_userkey	3m 37s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - auth_userkey	3m 17s
ci / Release to the Moodle plugin directory	0s
	1h 0m 48s

Provide feedback