Build epub and htmlzip docs #32128

Job	Run time
Docs	32s
Smoke (latest, Phpunit)	24s
Unit (7.4, Phpunit)	1m 51s
Smoke (latest, CodingStyle)	1m 21s
Behat (8.1, Chrome)	5m 21s
Smoke (latest, StaticAnalysis)	41s
Unit (7.4, Phpunit Lowest)	1m 49s
Behat (8.1, Chrome Lowest)	5m 24s
Behat (8.2, Chrome)	5m 1s
Unit (8.0, Phpunit)	1m 49s
Behat (8.2, Chrome Lowest)	5m 9s
Unit (8.0, Phpunit Lowest)	1m 59s
Behat (8.3, Chrome)	14m 6s
Unit (8.1, Phpunit)	1m 45s
Behat (8.3, Chrome Lowest)	5m 11s
Behat (latest, Firefox)	5m 14s
Unit (8.1, Phpunit Lowest)	1m 50s
Behat (latest, Chrome Slow)	9m 21s
Unit (8.2, Phpunit)	2m 1s
Unit (8.2, Phpunit Lowest)	2m 1s
Behat (latest, Firefox Slow)	7m 56s
Unit (8.3, Phpunit)	3m 25s
Unit (8.3, Phpunit Lowest)	2m 6s
Unit (latest, Phpunit Burn)	4m 36s
	1h 30m 53s

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