[podmanreceiver] add scraper's shutdown method #33963

Job	Run time
collector-build	5m 19s
docker-build	5m 39s
supervisor-test	45s
kubernetes-test-matrix (v1.26.0, receiver/k8sclusterreceiver)	4m 52s
kubernetes-test-matrix (v1.26.0, processor/k8sattributesprocessor)	4m 38s
kubernetes-test-matrix (v1.26.0, receiver/kubeletstatsreceiver)	4m 10s
kubernetes-test-matrix (v1.26.0, receiver/k8sobjectsreceiver)	3m 21s
kubernetes-test-matrix (v1.25.3, receiver/k8sclusterreceiver)	4m 44s
kubernetes-test-matrix (v1.25.3, processor/k8sattributesprocessor)	4m 48s
kubernetes-test-matrix (v1.25.3, receiver/kubeletstatsreceiver)	5m 22s
kubernetes-test-matrix (v1.25.3, receiver/k8sobjectsreceiver)	3m 45s
kubernetes-test-matrix (v1.24.7, receiver/k8sclusterreceiver)	4m 51s
kubernetes-test-matrix (v1.24.7, processor/k8sattributesprocessor)	4m 31s
kubernetes-test-matrix (v1.24.7, receiver/kubeletstatsreceiver)	4m 19s
kubernetes-test-matrix (v1.24.7, receiver/k8sobjectsreceiver)	3m 38s
kubernetes-test-matrix (v1.23.13, receiver/k8sclusterreceiver)	4m 37s
kubernetes-test-matrix (v1.23.13, processor/k8sattributesprocessor)	4m 47s
kubernetes-test-matrix (v1.23.13, receiver/kubeletstatsreceiver)	5m 4s
kubernetes-test-matrix (v1.23.13, receiver/k8sobjectsreceiver)	3m 18s
kubernetes-test	1s
	1h 22m 29s

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