Add more permissions to set Pod finalizers for controller

[aavarghese]

Error previously seen:

type: 'Warning' reason: 'InternalError' failed to bind resource to pod: failed to get or create data plane ConfigMap knative-eventing/kafka-source-dispatcher-2: configmaps \"kafka-source-dispatcher-2\" is forbidden: cannot set blockOwnerDeletion if an ownerReference refers to a resource you can't set finalizers on: , <nil>","knative.dev/pod":"kafka-controller-bfcdc9d66-mfkrh"}

Previous changes in #2024 weren't sufficient for the pods to fully come up.

Signed-off-by: aavarghese avarghese@us.ibm.com

Part of #1537

[aavarghese]

/cc @pierDipi

[pierDipi]

/lgtm
/approve

[codecov]

Codecov Report

Merging #2027 (7873e95) into main (79570ef) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##               main    #2027   +/-   ##
=========================================
  Coverage     67.27%   67.27%           
  Complexity      640      640           
=========================================
  Files           141      141           
  Lines          6722     6722           
  Branches        187      187           
=========================================
  Hits           4522     4522           
  Misses         1822     1822           
  Partials        378      378           

Flag	Coverage Δ
java-unittests	81.75% <ø> (ø)

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