NXP-14765: fix registering sync roots when permissions inheritance is blocked in a hierarchy

Conflicts:

	nuxeo-drive-server/nuxeo-drive-core/src/test/java/org/nuxeo/drive/service/TestNuxeoDriveManager.java
NXP-14765: fix registering sync roots when permissions inheritance is blocked in a hierarchy, only inspect parents up to the sync root
NXP-14765: Need to save session after setting ACP in 5.6.0