since all the python bindings are required for building the doc, extract
them into admin/doc-pybind.txt.
because the pybind python extensions require Cython python module to build,
we have to move them into another requirement file, and install them after
Cython is installed.
Signed-off-by: Kefu Chai <kchai@redhat.com>
to address the build failure of
python -m pip install --exists-action=w --no-cache-dir -r admin/doc-requirements.txt
ERROR: ../src/python-common is not a valid editable requirement. It should either be a path to a local project or a VCS URL (beginning with svn+, git+, hg+, or bzr+).
Signed-off-by: Kefu Chai <kchai@redhat.com>