Allow 8 arguments in ThinPool::setup()
Allow 8 arguments in ThinPool::setup()

The default limit is 7, 8 _is_ a lot, but we do seem to need them all.

Signed-off-by: mulhern <7b51bcf507bcd7afb72bf8663752c0ddbeb517f6@redhat.com>

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