python_runner/django_command: bugfixes (#8944) * python_runner/django_command: bugfixes * fix indentation * join path_prefix with : when concatenating with PATH * add changelog frag (cherry picked from commit a7d1b0fc52) Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
a7d1b0fc52