Change parsing of postgresql settings

[techknowlogick]

Fix #4200

[codecov-io]

Codecov Report

Merging #4275 into master will increase coverage by 0.04%.
The diff coverage is 90.9%.

@@            Coverage Diff             @@
##           master    #4275      +/-   ##
==========================================
+ Coverage   19.97%   20.01%   +0.04%     
==========================================
  Files         153      153              
  Lines       30581    30584       +3     
==========================================
+ Hits         6109     6122      +13     
+ Misses      23544    23535       -9     
+ Partials      928      927       -1

Impacted Files	Coverage Δ
models/models.go	33.05% <90.9%> (+3.86%)	⬆️
modules/process/manager.go	73.91% <0%> (+4.34%)	⬆️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a93f138...8296849. Read the comment docs.

[lunny]

@techknowlogick could you add some tests?

[lafriks]

@lunny I don't see how tests could be added for this

[techknowlogick]

@lafriks / @lunny I could create a new function (similar to parsePostgreSQLHostPort) for generating postgres connection strings and test various variables for that.

I have a couple of hours until I can get started on that, but that's what I was thinking. Let me know what you think.

[techknowlogick]

I pushed the function and now this is still pending tests.

[techknowlogick]

Ok. Tests added, and I know this already has 2 LG-TM, but I will wait for another merger/owner to merge this.