Puppetfile: move all repos to /source/ instead of /diffusion/
Puppetfile: move all repos to /source/ instead of /diffusion/

SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site