ceph: add affinity to csi version check job

[Rakshith-R]

Fixes: #8323

Signed-off-by: Rakshith R rar@redhat.com

[rakshith@fedora rook]$ k get pod rook-ceph-csi-detect-version-4qdkw -oyaml 
apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: "2021-10-13T09:04:38Z"
  generateName: rook-ceph-csi-detect-version-
  labels:
    app: rook-ceph-csi-detect-version
    controller-uid: c0d82ed3-2b57-48ad-b0ef-af91a7595151
    job-name: rook-ceph-csi-detect-version
    rook-version: v1.7.0-alpha.0.447.g7c863d53a
  name: rook-ceph-csi-detect-version-4qdkw
  namespace: rook-ceph
  ownerReferences:
  - apiVersion: batch/v1
    blockOwnerDeletion: true
    controller: true
    kind: Job
    name: rook-ceph-csi-detect-version
spec:
  affinity:
    nodeAffinity:
      requiredDuringSchedulingIgnoredDuringExecution:
        nodeSelectorTerms:
        - matchExpressions:
          - key: kubernetes.io/os
            operator: In
            values:
            - ' linux'
     

Checklist:

• Commit Message Formatting: Commit titles and messages follow guidelines in the developer guide.
• Skip Tests for Docs: Add the flag for skipping the build if this is only a documentation change. See here for the flag.
• Skip Unrelated Tests: Add a flag to run tests for a specific storage provider. See test options.
• Reviewed the developer guide on Submitting a Pull Request
• Documentation has been updated, if necessary.
• Unit tests have been added, if necessary.
• Integration tests have been added, if necessary.
• Pending release notes updated with breaking and/or notable changes, if necessary.
• Upgrade from previous release is tested and upgrade user guide is updated, if necessary.
• Code generation (make codegen) has been run to update object specifications, if necessary.

[leseb]

Add a better commit message and we should be good to go.