[llvm] Fix the number of runtime observations in reward reset.

[ChrisCummins]

This adds a resend_on_reset flag to the send_params() method that enables parameters to be resent immediately after a service is reset. This is required by the LLVM environment to ensure that the runtime observation parameters are sent before the reward space is reset.

Fixes https://github.com/facebookresearch/CompilerGym/issues/756.

[codecov-commenter]

Codecov Report

Merging #761 (a364852) into development (1c40e5b) will decrease coverage by 33.55%. The diff coverage is 50.00%.

@@               Coverage Diff                @@
##           development     #761       +/-   ##
================================================
- Coverage        89.28%   55.72%   -33.56%     
================================================
  Files              130      130               
  Lines             7912     7917        +5     
================================================
- Hits              7064     4412     -2652     
- Misses             848     3505     +2657     

Impacted Files	Coverage Δ
compiler_gym/envs/llvm/llvm_env.py	46.10% <22.22%> (-45.56%)	:arrow_down:
...ompiler_gym/service/client_service_compiler_env.py	74.42% <77.77%> (-16.45%)	:arrow_down:
compiler_gym/util/permutation.py	0.00% <0.00%> (-100.00%)	:arrow_down:
compiler_gym/leaderboard/__init__.py	0.00% <0.00%> (-100.00%)	:arrow_down:
compiler_gym/service/runtime/__init__.py	0.00% <0.00%> (-100.00%)	:arrow_down:
compiler_gym/service/runtime/benchmark_cache.py	0.00% <0.00%> (-100.00%)	:arrow_down:
...mpiler_gym/service/runtime/compiler_gym_service.py	0.00% <0.00%> (-100.00%)	:arrow_down:
...ice/runtime/create_and_run_compiler_gym_service.py	0.00% <0.00%> (-100.00%)	:arrow_down:
compiler_gym/envs/gcc/service/gcc_service.py	0.00% <0.00%> (-95.98%)	:arrow_down:
compiler_gym/leaderboard/llvm_instcount.py	0.00% <0.00%> (-92.79%)	:arrow_down:
... and 81 more

[ChrisCummins]

cc @lqwk, patch posted. I'll merge once tests pass.

Cheers, Chris

[lqwk]

@ChrisCummins thanks for the fix!

[ChrisCummins]

Merged via #767.