Bump bitflags from 1.3.2 to 2.0.0

[mpguerra]

Motivation

This is a breaking dependency upgrade. See: #6305 (review)

Specifications

Complex Code or Requirements

Testing

Related Work

[oxarbitrage]

This upgrade has a bunch of problems: bitflags/bitflags#310

I tried to fix it in our end with some experiences other people are having but i was not able to make it work yet.

I am unsure if they will make a new minor update to fix some. Ill know more soon as i will investigate it further.

[oxarbitrage]

I crated an issue in the bitflags repo. Lets see how it goes.

bitflags/bitflags#314

[oxarbitrage]

bitflags bumped a new version 2.0.1 where they explain better what changes are needed.

I made the needed changes to support the upgrade in #6346

[mpguerra]

Hey team! Please add your planning poker estimate with Zenhub @arya2 @conradoplg @dconnolly @oxarbitrage @teor2345 @upbqdn

[teor2345]

Fixed by PR #6346.