tune2fs: update ea_inode hashes when fs uuid changes

tune2fs: update ea_inode hashes when fs uuid changes

Extended attribute inodes maintain a crc32c hash that is used for
deduplication. The crc seed derives from uuid so ea_inode hashes
must be updated when uuid changes.

The ea_inode hash is also incorporated into the xattr entry e_hash
so the entries that reference the inode also must be updated.

Signed-off-by: Tahsin Erdogan <tahsin@google.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>