mgr/volumes: synchronize inode attributes for cloned subvolumes

mgr/volumes: synchronize inode attributes for cloned subvolumes

Synchronize ownership, permission and inode timestamp (access and
modification times) for all supported inode types. Note that inode
timestamps are synchronized upto seconds granularity.

Signed-off-by: Venky Shankar <vshankar@redhat.com>
(cherry picked from commit aac6b5f1cef7d055bdde797519aece779d06fb41)

 Conflicts:
	src/pybind/mgr/volumes/fs/async_cloner.py
        - uid and gid arguments of chown() and copy_file() were
          type converted to `int` for nautilus.