CRS metrics are hardcoded to "gauge" type

[rexagod]

What happened: CRS metrics are hard-coded to "gauge" as the their TYPE.

What you expected to happen: CRS metrics should be able to dynamically deduce the TYPE correctly.

How to reproduce it (as minimally and precisely as possible): PTAL at the example below.

Anything else we need to know?: Surfaced here: #1880 (comment).

---

Input

kind: CustomResourceStateMetrics
spec:
  resources:
    - groupVersionKind:
        group: "apps"
        version: "v1"
        kind: "Deployment"
      labelsFromPath:
        name: [metadata, name]
      metrics:
        - name: "test_metrics"
          help: "metrics for debugging"
          each:
            type: Info
            info:
              path: [metadata, annotations]
              labelFromKey: test

Output

# HELP kube_crd_test_metrics metrics for debugging
# TYPE kube_crd_test_metrics gauge (<--)
kube_crd_test_metrics{group="apps",kind="Deployment",name="nginx-deployment",test="deployment.kubernetes.io/revision",version="v1"} 1
kube_crd_test_metrics{group="apps",kind="Deployment",name="nginx-deployment",test="test-a",version="v1"} 1
kube_crd_test_metrics{group="apps",kind="Deployment",name="nginx-deployment",test="test-b",version="v1"} 2
# HELP kube_crd_test_metrics metrics for debugging
# TYPE kube_crd_test_metrics gauge (<--)
kube_crd_test_metrics{group="apps",kind="Deployment",name="nginx-deployment",test="deployment.kubernetes.io/revision",version="v1"} 1
kube_crd_test_metrics{group="apps",kind="Deployment",name="nginx-deployment",test="test-a",version="v1"} 1
kube_crd_test_metrics{group="apps",kind="Deployment",name="nginx-deployment",test="test-b",version="v1"} 2

---

Environment:

• kube-state-metrics version: HEAD

[rexagod]

/assign
cc @mrueg