Puppetfile: update icinga2 to v1.2.0
Puppetfile: update icinga2 to v1.2.0

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