feat(spans-migration): self hosted spans migration for discover saved queries #247794

Job	Run time
detect what files changed	14s
api docs test	6m 24s
select tests	27s
backend migration tests	9m 17s
cli test	2m 18s
check migration	1m 22s
monolith-dbs test	7m 6s
backend typing	4m 46s
requirements check	0s
api url typescript generation	-1s
calculate test shards	3s
backend test (9)	12m 53s
backend test (0)	14m 36s
backend test (2)	14m 28s
backend test (4)	12m 18s
backend test (1)	14m 23s
backend test (8)	14m 41s
backend test (5)	14m 23s
backend test (15)	12m 16s
backend test (3)	13m 55s
backend test (6)	14m 4s
backend test (7)	14m 49s
backend test (12)	14m 24s
backend test (14)	13m 42s
backend test (19)	13m 34s
backend test (11)	14m 37s
backend test (18)	14m 58s
backend test (21)	14m 6s
backend test (13)	12m 34s
backend test (10)	13m 20s
backend test (17)	13m 57s
backend test (20)	14m 26s
backend test (16)	14m 37s
Backend	3s
	5h 39m 0s

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