Increase response-timeout for big snapshot tests

[tezc]

https://github.com/RedisLabs/redisraft/actions/runs/3991700932/jobs/6846775748

Ran this test with trace level logs, looks like due to extreme slow-down on MacOS instance, followers send snapshot message responses after a second. Default response-timeout is 1 second. So, leader node marks the request failed and retries. It takes quite a time to finish snapshot delivery, sometimes test fails due to wait_for_unanimity() timeout which is 20 seconds.

For the two tests that use big snapshots, this PR increases response-timeout to 5 seconds.

[codecov-commenter]

Codecov Report

Merging #577 (83af773) into master (49b292c) will decrease coverage by 0.05%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #577      +/-   ##
==========================================
- Coverage   58.08%   58.04%   -0.05%     
==========================================
  Files          42       42              
  Lines       14717    14717              
  Branches     1734     1734              
==========================================
- Hits         8548     8542       -6     
- Misses       6169     6175       +6     

Impacted Files	Coverage Δ
src/join.c	73.58% <0.00%> (-7.55%)	⬇️
src/common.c	76.92% <0.00%> (-2.31%)	⬇️
deps/raft/src/raft_server.c	80.79% <0.00%> (+0.08%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.