add the option to edit protected configs

[alonre24]

As of redis 7.0, some configurations in redis as considered protected (such as dbfilename) and cannot be modified in run time, unless the --enable-protected-configs configuration (which is immutable) is set to yes (or local).
Here we add the option to set --enable-protected-configs yes in redis with a new parameter.

[codecov-commenter]

Codecov Report

Attention: 3 lines in your changes are missing coverage. Please review.

Comparison is base (9548544) 33.54% compared to head (ff39f43) 34.07%.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #200      +/-   ##
==========================================
+ Coverage   33.54%   34.07%   +0.52%     
==========================================
  Files          17       17              
  Lines        2382     2389       +7     
==========================================
+ Hits          799      814      +15     
+ Misses       1583     1575       -8     

Flag	Coverage Δ
unittests	34.07% <66.66%> (+0.52%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
RLTest/env.py	58.56% <100.00%> (+0.20%)	⬆️
RLTest/redis_std.py	58.44% <80.00%> (+2.45%)	⬆️
RLTest/__main__.py	0.00% <0.00%> (ø)

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