DRA - experimenting

DRA - experimenting

1. Create a k8s cluster with DRA enabled. We use latest minikube (v1.30.1) as at the moment of writing this, it is only one of the few providing already k8s 1.27
```bash
$ minikube start --driver=kvm2 --feature-gates=DynamicResourceAllocation=true \
	--kubernetes-version=v1.27.0-rc.0  \
	--extra-config=apiserver.runtime-config='resource.k8s.io/v1alpha2=true'
```

2. Example:
```yaml
apiVersion: resource.k8s.io/v1alpha2
kind: ResourceClass
metadata:
  name: resource.example.com
driverName: resource.example.com
parametersRef:
  apiGroup: v1
  kind: ConfigMap
  name: driver-param
  namespace: default
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: driver-param
data:
  value1: "a"
  value2: "b"
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: user-param
data:
  op1: "c"
  op2: "d"
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: user-param-2
data:
  op1: "c"
---
apiVersion: resource.k8s.io/v1alpha2
kind: ResourceClaim
metadata:
  name: claim-1
spec:
  resourceClassName: resource.example.com
  parametersRef:
    apiGroup: v1
    kind: ConfigMap
    name: user-param-2
---
apiVersion: resource.k8s.io/v1alpha2
kind: ResourceClaimTemplate
metadata:
  name: test-claim-template
spec:
  spec:
    resourceClassName: resource.example.com
    parametersRef:
      apiGroup: v1
      kind: ConfigMap
      name: user-param
---
apiVersion: v1
kind: Pod
metadata:
  name: pod-with-tests
spec:
  containers:
  - name: container0
    image: quay.io/busybox/busybox:latest
    command: ["sleep", "9999"]
    resources:
      claims:
      - name: test-0
  - name: container1
    image: quay.io/busybox/busybox:latest
    command: ["sleep", "9999"]
    resources:
      claims:
      - name: test-1
  resourceClaims:
  - name: test-0
    source:
      resourceClaimTemplateName: test-claim-template
  - name: test-1
    source:
      resourceClaimName: claim-1
```
Note: the pod isn't scheduled because we don't actually have a provider