Ignore 'The specified blob does not exist' error #400

Job	Run time
Check misspelled words	14s
Go build with -tags=stringlabels	1m 36s
Go build for different platforms	2m 34s
Linters (Static Analysis) for Go	13s
Thanos end-to-end tests (8, 0)	1m 57s
Thanos unit tests	7m 5s
Thanos end-to-end tests (8, 1)	1m 50s
Thanos end-to-end tests (8, 2)	1m 50s
Thanos end-to-end tests (8, 3)	1m 56s
Thanos end-to-end tests (8, 4)	1m 50s
Thanos end-to-end tests (8, 5)	2m 1s
Thanos end-to-end tests (8, 6)	1m 51s
Thanos end-to-end tests (8, 7)	1m 50s
	26m 47s

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