Build soledad package with gitlab-buildpackage

See platform#8808 (closed) for an overview of all platform packages to build.

As seen in !101 (closed), the build fails with error: invalid command 'pypi'

I can reproduce this inside the build container with:

root@runner--project-0-concurrent-0:/builds/project-0/source/common# python setup.py sdist bdist_wheel --universal upload  --sign -i  -r pypi
/usr/lib/python2.7/dist-packages/setuptools/dist.py:333: UserWarning: Normalizing '0.9.6post2+6.gc634b0b' to '0.9.6.post2+6.gc634b0b'
  normalized_version,
usage: setup.py [global_opts] cmd1 [cmd1_opts] [cmd2 [cmd2_opts] ...]
   or: setup.py --help [cmd1 cmd2 ...]
   or: setup.py --help-commands
   or: setup.py cmd --help

error: invalid command 'pypi'

I get the same error when trying to build it locally.