library/roles/ckan/ckan-solr/tasks/main.yml: Add some labels.
d4science-ghn-cluster/group_vars/ckan*: Fix the definitions for the new CKAN GRSF instance.
library/roles/smartgears/ckan_connector: New version, fix the upgrade phase.
library/roles/solr-tomcat-instance: Configure a multicore instance when requested.