feature: add RedisCluster CRD to supported Service Binding types

[Keanu73]

Changes

This adds the RedisCluster CRD type to the supported Service Binding registry bindings.

/kind enhancement

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  included if any changes are user facing
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[openshift-ci]

Hi @Keanu73. Thanks for your PR.

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[codecov]

Codecov Report

Merging #1407 (fa73461) into master (2bd54e6) will not change coverage.
The diff coverage is n/a.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1407   +/-   ##
=======================================
  Coverage   58.21%   58.21%           
=======================================
  Files          35       35           
  Lines        3011     3011           
=======================================
  Hits         1753     1753           
  Misses       1090     1090           
  Partials      168      168           

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[sadlerap]

Thanks for the PR!

Could you add an acceptance test for this to test/acceptance/features/supportExistingOperatorBackedServices.feature? We want to make sure we don't break this accidentially.