[buildout][develop] Add nose to list of eggs

Otherwise it's not taken into account when setting
up the development environment with buildout and
the statistics tests can't run properly as the django
script does not contain the path to the appropriate
egg.
1 job for update_installed_apps in 14 minutes and 34 seconds (queued for 1 second)
Status Job ID Name Coverage
  Build
passed #209505
docker-build
build_linux_36

00:14:34

66.0%