Add hostname field to Conference (#4662) #3460

Job	Run time
Check frontend needs building	12s
Check pretix needs building	12s
Check backend needs building	14s
Build pretix	0s
Build backend / Build	2m 38s
Wait backend deployment	-1s
Build frontend	0s
Deploy backend	-1s
Deploy frontend	0s
Wait frontend deployment	0s
Build backend / Build	4m 34s
Check pretix needs building	12s
Build pretix	0s
Check frontend needs building	12s
Check backend needs building	14s
Deploy backend	47s
Wait backend deployment	8m 8s
Build frontend	-1s
Deploy frontend	-1s
Wait frontend deployment	-1s
Check frontend needs building	12s
Build pretix	0s
Check backend needs building	14s
Wait backend deployment	13s
Build backend / Build	4m 34s
Deploy backend	47s
Check pretix needs building	12s
Deploy frontend	38s
Build frontend	-1s
Wait frontend deployment	11s
	24m 18s

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