Refactor/id

[iGxnon]

I accidentally deleted the repository I forked. Reopen of #533

Please briefly answer these questions:

• what problem are you trying to solve? (or if there's no problem, what's the motivation for this change?)

• what changes does this pull request make?

• are there any non-obvious implications of these changes? (does it break compatibility with previous versions, etc)

[codecov]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (fa656ad) 64.40% compared to head (fae28d0) 78.91%.
Report is 9 commits behind head on master.

Files	Patch %	Lines
curp/src/client.rs	85.71%	2 Missing ⚠️
curp/src/rpc/mod.rs	95.83%	2 Missing ⚠️
curp/src/server/raw_curp/mod.rs	96.82%	2 Missing ⚠️
curp-external-api/src/role_change.rs	0.00%	1 Missing ⚠️
curp/src/log_entry.rs	95.45%	1 Missing ⚠️
...urp/src/server/cmd_worker/conflict_checked_mpmc.rs	90.00%	1 Missing ⚠️
curp/src/server/mod.rs	66.66%	1 Missing ⚠️
xline/src/server/kv_server.rs	83.33%	1 Missing ⚠️
xline/src/server/lock_server.rs	0.00%	1 Missing ⚠️
xline/src/storage/compact/mod.rs	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           master     #554       +/-   ##
===========================================
+ Coverage   64.40%   78.91%   +14.50%     
===========================================
  Files         105      154       +49     
  Lines       18802    21192     +2390     
  Branches    18802        0    -18802     
===========================================
+ Hits        12109    16723     +4614     
+ Misses       5955     4469     -1486     
+ Partials      738        0      -738     

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[Phoenix500526]

LGTM