add timeout for killing pods when stopping #807

Job	Run time
System Integration Test (ubuntu24.04)	11m 8s
Code Check (ubuntu24.04)	1m 25s
System Integration Test for Mixture (ubuntu24.04)	9m 28s
Unit Test (ubuntu24.04)	4m 45s
System Integration Test for Milvus Upgrade (ubuntu24.04)	7m 54s
System Integration Test for New Feature (ubuntu24.04)	15m 8s
System Integration Test for Upgrade (ubuntu24.04)	11m 8s
	1h 0m 56s

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