Fixing async test for module list

[chayim]

Ensuring the async test for module list behaves like the sync tests. This means that if the command is run against a redis-stack, or a redis instance, we now can assert that outputs are proper.

[codecov-commenter]

Codecov Report

Merging #2367 (b8235b0) into master (744cb09) will decrease coverage by 0.01%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master    #2367      +/-   ##
==========================================
- Coverage   92.22%   92.21%   -0.02%     
==========================================
  Files         111      111              
  Lines       28813    28814       +1     
==========================================
- Hits        26573    26571       -2     
- Misses       2240     2243       +3     

Impacted Files	Coverage Δ
tests/test_asyncio/test_commands.py	98.34% <50.00%> (-0.05%)	⬇️
tests/test_asyncio/test_pubsub.py	99.32% <0.00%> (-0.17%)	⬇️
redis/asyncio/connection.py	86.01% <0.00%> (-0.12%)	⬇️

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