MR3: Disable lang upgrades until lang packs are available (4.5) #84

Job	Run time
Collect tests	5s
Test (phpunit_test)	6m 51s
Test (behat_test)	5m 59s
Test (behat_bisect_test)	6m 59s
Code coverage (phpunit_test)	7m 21s
Test (phpunit_bisect_test)	11m 6s
Code coverage (behat_test)	6h 0m 16s
Test (runner_test)	1m 46s
Code coverage (behat_bisect_test)	7m 26s
Test (postjobs_test)	13m 19s
Code coverage (phpunit_bisect_test)	9m 40s
Code coverage (runner_test)	1m 54s
Code coverage (postjobs_test)	13m 46s
	7h 26m 28s

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