Install Dirac v9 + DiracX on Test Cluster

Fill this issue to create a documentation: https://github.com/DIRACGrid/diracx/issues/331

• Get a clientID on the CTAO IAM for diracx auth : https://iam-ctao.cloud.cnaf.infn.it/dashboard#!/home/clients
• Update the servers from a v8 client + DB update
• Convert NoSetup: https://gist.github.com/atsareg/080682ed97f329e65c2458e99eca89e5
• Convert Operations section: https://github.com/DIRACGrid/DIRAC/pull/7218/files
• try to synchronize CS using (can have issues with specific CTA components): https://github.com/DIRACGrid/diracx/blob/main/docs/CONFIGURATION.md#modifying-configuration
• (optional) Try to use the Desy Opensearch dbs instead of diracx native elastic deployment or the one install with diracx
• restore the CI system tests: #89 !286 (merged)
• Update Federico's docs: https://codimd.web.cern.ch/5C44tUJTReacVOcIn_0Bfg?view