test: Increase the host shutdown delay in TestUpdateLogs
test: Increase the host shutdown delay in TestUpdateLogs

This gives the test a chance to collect debug logs if receiving the log
message times out (which takes 10s).

Signed-off-by: Lewis Marshall <748e1641a368164906d4a0c0e3965345453dcc93@lmars.net>

philiplb/flynn,lmars/flynn,flynn/flynn,philiplb/flynn,lmars/flynn,lmars/flynn,lmars/flynn,flynn/flynn,lmars/flynn,philiplb/flynn,flynn/flynn,flynn/flynn,philiplb/flynn,philiplb/flynn,flynn/flynn