[wip] unit tests with mysql & postgres

[mmetc]

[codecov-commenter]

Codecov Report

Merging #1590 (6f41f9b) into master (67841d5) will increase coverage by 0.05%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master    #1590      +/-   ##
==========================================
+ Coverage   52.17%   52.22%   +0.05%     
==========================================
  Files         136      136              
  Lines       18591    18595       +4     
==========================================
+ Hits         9699     9712      +13     
+ Misses       7837     7829       -8     
+ Partials     1055     1054       -1     

Flag	Coverage Δ
func-crowdsec	15.33% <ø> (ø)
func-cscli	44.55% <ø> (ø)
unit-linux	64.29% <0.00%> (+0.09%)	:arrow_up:
unit-windows	53.62% <0.00%> (+0.10%)	:arrow_up:

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/csconfig/database.go	77.77% <0.00%> (-22.23%)	:arrow_down:
pkg/cwhub/loader.go	65.64% <0.00%> (+0.92%)	:arrow_up:
pkg/acquisition/modules/file/file.go	67.72% <0.00%> (+0.94%)	:arrow_up:
pkg/cwhub/download.go	52.17% <0.00%> (+1.44%)	:arrow_up:
pkg/cwhub/install.go	47.69% <0.00%> (+3.07%)	:arrow_up:

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