tools/docker: add various fsck-like commands to the environment #14551

Job	Run time
aux	4m 38s
dashboard	3m 32s
build	10m 8s
arch (presubmit_arch_linux)	10m 37s
gvisor	4m 2s
race	7m 10s
old	6m 44s
arch (presubmit_arch_freebsd)	6m 19s
race_dashboard	4m 41s
arch (presubmit_arch_netbsd)	4m 22s
arch (presubmit_arch_openbsd)	4m 18s
arch (presubmit_arch_darwin)	4m 22s
arch (presubmit_arch_windows)	3m 23s
arch (presubmit_arch_executor)	3m 25s
	1h 17m 41s

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