Ozone file system is under renaming in
HDDS-651 from o3:// to o3fs://. But branch-3.2 still contains a reference with o3://.
The easiest way to fix it just remove the fs.o3.imp definition from core-default.xml from branch-3.2 as since
HDDS-654 the file system could be registered with Service Provider Interface (META-INF/services...)