Revert "fix: make iterateTLSConfig only work for TLS config"

[Ace-Tang]

Reverts #2057

[pouchrobot]

Thanks for your contribution. 🍻 @Ace-Tang
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[pouchrobot]

@Ace-Tang Thanks for your contribution. 🍻
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[allencloud]

Since it is a revert action, we can merge this. LGTM

[allencloud]

Why to revert this? @Ace-Tang

[codecov-io]

Codecov Report

Merging #2111 into master will increase coverage by 0.11%.
The diff coverage is 75%.

@@            Coverage Diff            @@
##           master   #2111      +/-   ##
=========================================
+ Coverage   65.09%   65.2%   +0.11%     
=========================================
  Files         208     208              
  Lines       16411   16411              
=========================================
+ Hits        10682   10701      +19     
+ Misses       4399    4384      -15     
+ Partials     1330    1326       -4

Flag	Coverage Δ
#criv1alpha1test	33.39% <0%> (+0.08%)	⬆️
#criv1alpha2test	34% <0%> (+0.06%)	⬆️
#integrationtest	39.85% <0%> (+0.05%)	⬆️
#unittest	23.91% <75%> (+0.04%)	⬆️

Impacted Files	Coverage Δ
daemon/config/config.go	48.75% <75%> (+6.25%)	⬆️
daemon/mgr/container.go	56.3% <0%> (+0.2%)	⬆️
daemon/logger/jsonfile/utils.go	73.17% <0%> (+1.62%)	⬆️
ctrd/image.go	78.94% <0%> (+2.19%)	⬆️
ctrd/watch.go	80.3% <0%> (+4.54%)	⬆️
apis/server/utils.go	66.66% <0%> (+4.76%)	⬆️