Move Local structure definition to localTemplate

[tsachiherman]

Summary

Move Local structure definition to localTemplate, so that changes to localTemplate are more obvious to be a change of template than a change of data.

Test Plan

Tested manually.

[codecov-commenter]

Codecov Report

Merging #3161 (94ac8b7) into master (465c191) will decrease coverage by 0.00%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master    #3161      +/-   ##
==========================================
- Coverage   43.80%   43.80%   -0.01%     
==========================================
  Files         391      392       +1     
  Lines       86880    86880              
==========================================
- Hits        38062    38059       -3     
- Misses      42786    42790       +4     
+ Partials     6032     6031       -1     

Impacted Files	Coverage Δ
config/config.go	47.05% <ø> (-0.77%)	⬇️
config/localTemplate.go	50.00% <50.00%> (ø)
util/metrics/gauge.go	68.00% <0.00%> (-2.67%)	⬇️
util/metrics/counter.go	78.57% <0.00%> (-2.39%)	⬇️
data/abi/abi_type.go	92.03% <0.00%> (-1.00%)	⬇️
catchup/service.go	69.07% <0.00%> (-0.75%)	⬇️
network/wsPeer.go	72.53% <0.00%> (-0.27%)	⬇️
network/wsNetwork.go	65.39% <0.00%> (ø)
ledger/acctupdates.go	64.75% <0.00%> (+0.49%)	⬆️
network/latencyTracker.go	70.21% <0.00%> (+4.25%)	⬆️

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