Update group logic for pluginfiles #335 #496

Job	Run time
ci / check if job needs to run	5s
ci / prepare test matrix	12s
ci / MOODLE_310_STABLE - pgsql - php 7.2 - tool_excimer	3m 38s
ci / MOODLE_311_STABLE - mariadb - php 7.3 - tool_excimer	3m 15s
ci / MOODLE_35_STABLE - mariadb - php 7.1 - tool_excimer	2m 58s
ci / MOODLE_35_STABLE - pgsql - php 7.1 - tool_excimer	3m 32s
ci / MOODLE_35_STABLE - pgsql - php 7.2 - tool_excimer	2m 40s
ci / MOODLE_35_STABLE - mariadb - php 7.2 - tool_excimer	3m 35s
ci / MOODLE_36_STABLE - mariadb - php 7.1 - tool_excimer	3m 30s
ci / MOODLE_38_STABLE - mariadb - php 7.3 - tool_excimer	3m 51s
ci / MOODLE_37_STABLE - pgsql - php 7.2 - tool_excimer	3m 11s
ci / MOODLE_39_STABLE - mariadb - php 7.2 - tool_excimer	3m 35s
ci / MOODLE_39_STABLE - pgsql - php 7.2 - tool_excimer	3m 28s
ci / MOODLE_39_STABLE - pgsql - php 7.3 - tool_excimer	3m 26s
ci / MOODLE_400_STABLE - pgsql - php 7.3 - tool_excimer	3m 12s
ci / MOODLE_401_STABLE - pgsql - php 7.4 - tool_excimer	3m 21s
ci / MOODLE_39_STABLE - mariadb - php 7.3 - tool_excimer	3m 21s
ci / MOODLE_401_STABLE - mariadb - php 7.4 - tool_excimer	3m 15s
ci / MOODLE_401_STABLE - pgsql - php 8.0 - tool_excimer	3m 39s
ci / MOODLE_401_STABLE - mariadb - php 8.0 - tool_excimer	3m 47s
ci / Release to the Moodle plugin directory	0s
	1h 1m 31s

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