debian/control:  squeeze requres cryptsetup package

Squeeze requires the cryptsetup package which has been renamed
cryptsetup-bin in later versions.  Allow either package to
satisfy the dependency.

Signed-off-by: Gary Lowell  <gary.lowell@inktank.com>
(cherry picked from commit 83bbae415de16f708ca1cb24861ddbb0bd514a7f)