Add check for stuck jobs in poll() #3769

Job	Run time
client-armv6-build	2m 49s
client-arm-build	2m 55s
client-arm64-build	2m 48s
client-x86-build	3m 9s
client-x86_64-build	3m 4s
libs-build	5m 56s
apps-build	9m 15s
libs-cmake-build	7m 29s
manager-build (assembleRelease)	4m 28s
manager-build (assembleXiaomi_release)	4m 31s
manager-build (assembleArmv6_release)	4m 41s
manager-build (jacocoTestReportDebug)	6m 26s
	57m 31s

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