fix(factory): on reload, close the connection right away.

[Reasno]

graceful shutdown logic should be implemented in the close function, not in the factory.

[codecov]

Codecov Report

Merging #235 (76621dd) into master (b1f094d) will increase coverage by 0.00%.
The diff coverage is 75.00%.

@@           Coverage Diff           @@
##           master     #235   +/-   ##
=======================================
  Coverage   83.45%   83.46%           
=======================================
  Files         102      102           
  Lines        3796     3797    +1     
=======================================
+ Hits         3168     3169    +1     
+ Misses        462      461    -1     
- Partials      166      167    +1     

Impacted Files	Coverage Δ
c.go	77.45% <73.33%> (-0.12%)	⬇️
di/factory.go	85.71% <100.00%> (-2.05%)	⬇️
config/watcher/file.go	62.79% <0.00%> (+4.65%)	⬆️

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