[podmanreceiver] add scraper's shutdown method #33560

Job	Run time
collector-build	5m 20s
docker-build	5m 59s
supervisor-test	54s
kubernetes-test-matrix (v1.26.0, receiver/k8sclusterreceiver)	4m 38s
kubernetes-test-matrix (v1.26.0, processor/k8sattributesprocessor)	4m 39s
kubernetes-test-matrix (v1.26.0, receiver/kubeletstatsreceiver)	4m 25s
kubernetes-test-matrix (v1.26.0, receiver/k8sobjectsreceiver)	3m 14s
kubernetes-test-matrix (v1.25.3, receiver/k8sclusterreceiver)	4m 56s
kubernetes-test-matrix (v1.25.3, processor/k8sattributesprocessor)	4m 48s
kubernetes-test-matrix (v1.25.3, receiver/kubeletstatsreceiver)	4m 21s
kubernetes-test-matrix (v1.25.3, receiver/k8sobjectsreceiver)	3m 36s
kubernetes-test-matrix (v1.24.7, receiver/k8sclusterreceiver)	4m 54s
kubernetes-test-matrix (v1.24.7, processor/k8sattributesprocessor)	4m 35s
kubernetes-test-matrix (v1.24.7, receiver/kubeletstatsreceiver)	4m 20s
kubernetes-test-matrix (v1.24.7, receiver/k8sobjectsreceiver)	3m 36s
kubernetes-test-matrix (v1.23.13, receiver/k8sclusterreceiver)	4m 53s
kubernetes-test-matrix (v1.23.13, processor/k8sattributesprocessor)	5m 29s
kubernetes-test-matrix (v1.23.13, receiver/kubeletstatsreceiver)	4m 17s
kubernetes-test-matrix (v1.23.13, receiver/k8sobjectsreceiver)	3m 31s
kubernetes-test	1s
	1h 22m 26s

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