Add the all flag to the pip install

[JCZuurmond]

Description

Make sure you install all dependencies when contributing.

Checklist

• I have read the contributing guide and understand what's expected of me
• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• I have run changie new to create a changelog entry

[mikealfare]

We've been running pip install -r requirements.txt (via tox/make) to do this, but I actually like this better as we don't have to maintain two versions, one in setup.py and one in requirements.txt. Would you mind making the updates to tox.ini and Makefile and removing requirements.txt to see if that all works together?

[JCZuurmond]

@mikealfare : I updated the accordingly. Could you have a look why the unit test CircleCI is failing due to a missing pyproject.toml. The Github action unit test is not failing

[mikealfare]

The tests on CircleCI are failing with this error:

#!/bin/bash -eo pipefail
tox -e flake8,unit
ERROR: missing /home/dbt_test_user/project/pyproject.toml


Exited with code exit status 1
CircleCI received exit code 1

We don't use pyproject.toml yet. I wonder if removing requirements.txt entirely caused some under the hood magic to look for pyproject.toml and then fail if it's not found. Just for fun, do you mind uploading an empty requirements.txt with a comment along the lines of "this makes CircleCI happy"?

[github-actions]

This PR has been marked as Stale because it has been open with no activity as of late. If you would like the PR to remain open, please comment on the PR or else it will be closed in 7 days.

[github-actions]

Although we are closing this PR as stale, it can still be reopened to continue development. Just add a comment to notify the maintainers.