*Fix graceful shutdown notify failure #282

Job	Run time
download midwares and cache	5s
download midwares and cache	5s
build agent and cache	2m 22s
build agent and cache	1m 49s
set-execution-conditions	10s
set-execution-conditions	10s
Test for spring	1s
Test for spring (1.5.0.RELEASE, Edgware.SR2, 1.5.0.RELEASE)	3m 43s
Test for spring (2.0.2.RELEASE, Finchley.RELEASE, 4.1.3, 2.0.0.RELEASE, 1.0.1)	3m 56s
Test for spring (2.1.0.RELEASE, Greenwich.RELEASE, 4.2.6, 2.1.0.RELEASE, 1.0.1)	3m 34s
Test for spring (2.2.0.RELEASE, Hoxton.RELEASE, 4.3.6, 2.2.0.RELEASE, 1.0.3)	3m 29s
Test for spring (2.3.0.RELEASE, Hoxton.RELEASE, 4.4.1, 2.2.8.RELEASE, 1.1.2)	3m 44s
Test for spring (2.4.0, 2020.0.0, 4.5.6, 2021.0.1.0, 1.1.4)	3m 50s
Test for spring (2.6.2, 2021.0.0, 4.5.10, 2021.1, 1.1.10)	3m 35s
Test for spring (2.7.2, 2021.0.3, 4.5.13, 1.1.12)	3m 24s
	33m 57s

Provide feedback