Set pod affinity for host assisted clone source pods

[akalenyu]

Is your feature request related to a problem? Please describe:
Basically, the issue in kubernetes/kubernetes#103305 applies to CDI
in the concurrent host assisted clone use case, on storage that is not topology constrained (globally accessible from all nodes).
Consider the scenario:

• Initiate 2 concurrent host assisted clone from source-pvc that was provisioned by rook-ceph-block with ReadWriteOnce
• It is entirely possible that each of the pods lands on a different node, and thus one will remain pending

Describe the solution you'd like:
The suggested solution in hetznercloud/csi-driver#319 (comment)

Describe alternatives you've considered:
A clear and concise description of any alternative solutions or features you've considered.

Additional context:
This is not a problem for topology constrained storage like HPP because scheduler will ensure
the pods land where the PV is (volume.kubernetes.io/selected-node ann)

[akalenyu]

/good-first-issue

[ido106]

/assign ido106