fix: check the password on leader

[iGxnon]

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?)

  AuthServer::authenticate should not check password locally.

• what changes does this pull request make?

  Move the check_password to the leader.

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

  No

[codecov]

Codecov Report

Patch coverage: 71.14% and project coverage change: +0.17% 🎉

Comparison is base (ac697cb) 54.09% compared to head (a3779c2) 54.27%.
Report is 10 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #435      +/-   ##
==========================================
+ Coverage   54.09%   54.27%   +0.17%     
==========================================
  Files         102      102              
  Lines       17150    17355     +205     
  Branches    17150    17355     +205     
==========================================
+ Hits         9277     9419     +142     
- Misses       7306     7363      +57     
- Partials      567      573       +6     

Files Changed	Coverage Δ
curp/src/error.rs	54.19% <0.00%> (-0.42%)	⬇️
curp/src/server/curp_node.rs	22.38% <0.00%> (-0.21%)	⬇️
curp/src/server/mod.rs	0.00% <0.00%> (ø)
xline/src/server/auth_server.rs	0.00% <0.00%> (ø)
xline/src/server/lease_server.rs	0.00% <0.00%> (ø)
xline/src/server/xline_server.rs	0.00% <0.00%> (ø)
xline/src/storage/auth_store/store.rs	56.70% <0.00%> (-0.06%)	⬇️
curp/src/server/raw_curp/mod.rs	69.21% <74.71%> (+0.67%)	⬆️
curp/src/server/raw_curp/tests.rs	69.72% <75.00%> (+0.93%)	⬆️
curp/src/members.rs	88.12% <82.35%> (+4.03%)	⬆️
... and 2 more

... and 2 files with indirect coverage changes

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[Phoenix500526]

LGTM

[themanforfree]

LGTM

[Phoenix500526]

LGTM