feat(redis): add cluster connect command

[jremy42]

close #2961

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Relates OR Closes #0000

Release note for CHANGELOG:

[codecov-commenter]

Codecov Report

:x: Patch coverage is 26.19048% with 93 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 57.08%. Comparing base (f86d1d4) to head (a04e6f6). :white_check_mark: All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
internal/namespaces/redis/v1/custom_cluster.go	25.60%	92 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5211      +/-   ##
==========================================
- Coverage   57.13%   57.08%   -0.06%     
==========================================
  Files         312      312              
  Lines       69970    70095     +125     
==========================================
+ Hits        39980    40012      +32     
- Misses      28495    28587      +92     
- Partials     1495     1496       +1     

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