StratFilesystem::initialize should call ThinDev::new()
StratFilesystem::initialize should call ThinDev::new()

StratFilesystem::initialize shouldn't call StratFilesytem::setup
since ::setup calls ThinDev::setup.  On the ::initialize call,
we need to use ThinDev::new().

Signed-off-by: Todd Gill <7afbb5ba98932b8ffb9cc9e6675c4792db142529@redhat.com>

mulkieran/stratisd,mulkieran/stratisd,trgill/stratisd,trgill/stratisd,stratis-storage/stratisd,stratis-storage/stratisd,stratis-storage/stratisd