Issue open-horizon#4043 - Bug: agent-uninstall.sh stucked when deleti… #416

Job	Run time
test (NOLOOP=1)	8m 5s
test (NOLOOP=1)	54m 10s
test (NOLOOP=1)	25m 32s
test (NOLOOP=1)	27m 54s
test (NOLOOP=1 TEST_PATTERNS=sall)	8m 17s
test (NOLOOP=1 TEST_PATTERNS=sall)	54m 25s
test (NOLOOP=1 TEST_PATTERNS=sall)	25m 48s
test (NOLOOP=1 TEST_PATTERNS=sall)	42m 22s
	4h 6m 33s

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