Parametrize pipes deployment

We need to parametrize the way ai pipes are deployed (on which node)

• See https://jira.nuxeo.com/browse/NXP-29361
• See https://github.com/nuxeo/marketplace-nco/blob/master/src/main/resources/install/templates-10.10/nco-cloud/nxserver/config/nco-cloud-worker-config.xml.nxftl