feat(postgres): dyanmic oids(#9863)

[javiertury]

Pull Request check-list

• Does npm run test or npm run test-DIALECT pass with this change (including linting)?
• Does the description below contain a link to an existing issue (Closes #[issue]) or a description of the issue you are solving?
• Have you added new tests to prevent regressions?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Did you follow the commit message conventions explained in CONTRIBUTING.md?

Description of change

Related to issue #9863. This pull request makes postgres DataTypes OID agnostic, all OID information is contained in ConnectionManager. They are refreshed automatically.

I've added some tests but I didn't run them. I will wait for this pull request to run them on travis.

EDIT: Autodetection of Ranges dropped, reasons in #9863

[codecov]

Codecov Report

Merging #10077 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #10077      +/-   ##
==========================================
+ Coverage    96.3%    96.3%   +<.01%     
==========================================
  Files          63       63              
  Lines        9413     9429      +16     
==========================================
+ Hits         9065     9081      +16     
  Misses        348      348

Impacted Files	Coverage Δ
lib/data-types.js	95.15% <ø> (-0.07%)	⬇️
lib/dialects/postgres/data-types.js	97.87% <100%> (+0.04%)	⬆️
lib/dialects/postgres/connection-manager.js	94.4% <100%> (+0.76%)	⬆️

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[javiertury]

Take a look at travis tests, I pass all except for one test on postgres 10. The specific test I fail looks fishy. I belive it is not related to the work I have done. That specific test is run with this.retries(3), which could mean it is not a deterministic test.

[sushantdhiman]

Looks good, some code style related changes

[sushantdhiman]

This mapping doesn't serves any purpose, right? but leave it for now

[javiertury]

You are right, as of now it doesn't have any purpose. Originally I had two cases in mind. The first one was to allow overriding the default type parser(this.lib.types.typeParser) within sequelize. In this case you need the mapping to get the OID and set the parser. The second case was range autodetection, which requires base types to be mapped.

[sushantdhiman]

Thanks @javiertury 👍