[pkg/ottl] Support dynamic indexing #47308

Job	Run time
collector-build	6m 23s
docker-build	7m 10s
supervisor-test	3m 3s
kubernetes-test-matrix (v1.30.0, receiver/k8sclusterreceiver)	6m 31s
kubernetes-test-matrix (v1.30.0, processor/k8sattributesprocessor)	7m 4s
kubernetes-test-matrix (v1.30.0, receiver/kubeletstatsreceiver)	4m 25s
kubernetes-test-matrix (v1.30.0, receiver/k8sobjectsreceiver)	3m 5s
kubernetes-test-matrix (v1.23.17, receiver/k8sclusterreceiver)	6m 37s
kubernetes-test-matrix (v1.23.17, processor/k8sattributesprocessor)	6m 34s
kubernetes-test-matrix (v1.23.17, receiver/kubeletstatsreceiver)	4m 12s
kubernetes-test-matrix (v1.23.17, receiver/k8sobjectsreceiver)	3m 13s
kubernetes-test	1s
	58m 18s

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