GEODE-6249: port attributes mutator test

[pdxcodemonkey]

... and rename it "ExpirationTest," since it doesn't actually use/test AttributeMutator.

[codecov-io]

Codecov Report

Merging #431 into develop will increase coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           develop    #431      +/-   ##
==========================================
+ Coverage    72.17%   72.3%   +0.13%     
==========================================
  Files          655     654       -1     
  Lines        52380   52349      -31     
==========================================
+ Hits         37803   37851      +48     
+ Misses       14577   14498      -79

Impacted Files	Coverage Δ
cppcache/src/ThinClientLocatorHelper.cpp	73.98% <0%> (+0.4%)	⬆️
cppcache/src/ThinClientRegion.cpp	55.65% <0%> (+0.45%)	⬆️
cppcache/src/ThinClientRedundancyManager.cpp	72.5% <0%> (+0.46%)	⬆️
cppcache/src/ClientMetadata.cpp	62.96% <0%> (+0.61%)	⬆️
cppcache/src/TcrEndpoint.cpp	53.19% <0%> (+0.83%)	⬆️
cppcache/src/ThinClientPoolDM.cpp	68.76% <0%> (+0.96%)	⬆️
cppcache/src/statistics/HostStatSampler.cpp	47.15% <0%> (+1.03%)	⬆️
cppcache/src/RemoteQuery.cpp	76.84% <0%> (+1.05%)	⬆️
cppcache/include/geode/ExceptionTypes.hpp	35.16% <0%> (+1.09%)	⬆️
cppcache/src/TcrConnection.cpp	63.31% <0%> (+1.13%)	⬆️
... and 6 more

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[igodwin]

Clean port. I appreciate the rename. Perhaps, if we decide to create a single test suite for all region attributes, we could name it more generic, again. attributesMutator was refactored to attributes in a past PR, but it looks like we didn't update the test name.

[pdxcodemonkey]

Yeah we'll need to check and see if we have coverage of attributes elsewhere, cause this test definitely did/does nothing the original name would suggest.