Fixes #5322: set system groups to be dynamic so they are updated automatically
Merge pull request #640 from VinceMacBuche/bug_5322/Update_has_policy_servers

Fixes #5322: Update 'hasPolicyServers' when uodate dynamic groups
Merge branch 'branches/rudder/2.10' into branches/rudder/2.11
Merge branch 'branches/rudder/2.11' into branches/rudder/3.0