StarlingX 3.x branch fails to build wheels due to broken setuptools

[Davlet Panech]

Brief Description
-----------------

Wheels build fails to upgrade setuptools

Severity
--------
Critical

Steps to reproduce
------------------

run: build-tools/build-wheels/build-wheel-tarball.sh

Expected Behavior
-----------------
The build succeeds

Actual Behavior
---------------
"pip pip install --upgrade pip setuptools" fails

Reproducibility
---------------
Reproducible

Branch
------
r/stx.3.0

Logs
----
pip install --upgrade pip setuptools
Collecting pip
  Downloading https://files.pythonhosted.org/packages/43/84/23ed6a1796480a6f1a2d38f2802901d078266bda38388954d01d3f2e821d/pip-20.1.1-py2.py3-none-any.whl (1.5MB)
Collecting setuptools
  Downloading https://files.pythonhosted.org/packages/8b/0f/5f135746c4d0c95fcc3c9a30ac942330bbdf092879ccaae7e3dcba6ea214/setuptools-49.1.0.zip (2.2MB)
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "setuptools/__init__.py", line 21, in <module>
        import setuptools.version
      File "setuptools/version.py", line 1, in <module>
        import pkg_resources
      File "pkg_resources/__init__.py", line 1381
        raise SyntaxError(e) from e
                                ^
    SyntaxError: invalid syntax

    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /tmp/pip-build-DXf5t8/setuptools/

[Davlet Panech (dpanech)]

There seems to be a fix in master: https://review.opendev.org/#/c/711967/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/740338
Committed: https://git.openstack.org/cgit/starlingx/root/commit/?id=e16f4c4bedafe2d7cd1a39934be8d8dc4ed49caa
Submitter: Zuul
Branch: r/stx.3.0

commit e16f4c4bedafe2d7cd1a39934be8d8dc4ed49caa
Author: Davlet Panech <email address hidden>
Date: Mon Mar 9 14:54:10 2020 -0400

    Fixed broken setuptools import

    pyScss tries to import a module called "Feature" from setuptools,
    which was removed from setuptools 46.0.0 (mar 8 2020). This causes
    compilation erros. The fix updates "pip install" in Dockerfile
    to install setuptools < 46.0.0

    Change-Id: Ib5c00aafb934efaf1413e72ede30638f2dc35230
    Signed-off-by: Davlet Panech <email address hidden>
    (cherry picked from commit 3b0e2dd4ea92b4fe5b53b1fd4b38a5e673e9c92c)
    Signed-off-by: Davlet Panech <email address hidden>
    Closes-Bug: 1886963