[8.x] Permanently switch from SecurityManager to Entitlements (#124865)#125076

ldematte merged 2 commits intoelastic:8.xelastic/elasticsearch:8.xfrom

ldematte:backport/8.x/entitlements/always-enabled-minimalldematte/elasticsearch:backport/8.x/entitlements/always-enabled-minimalCopy head branch name to clipboard