syz-cluster: fix db-mgmt job problems #16611

Job	Run time
dashboard	2m 18s
build	1m 42s
aux	4m 29s
arch (presubmit_arch_freebsd)	5m 16s
arch (presubmit_arch_linux)	5m 16s
arch (presubmit_arch_executor)	3m 25s
arch (presubmit_arch_openbsd)	3m 45s
arch (presubmit_arch_darwin)	3m 46s
race_dashboard	7m 17s
arch (presubmit_arch_netbsd)	3m 52s
gvisor	3m 57s
arch (presubmit_arch_windows)	3m 38s
race	7m 36s
old	5m 14s
	1h 1m 31s

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