valgrind: added suppression for cython constants
valgrind: added suppression for cython constants

Signed-off-by: Jason Dillaman <ae60fc3de6a668216bf89c7b1e7bff85becaa6b2@redhat.com>

ceph/teuthology,ktdreyer/teuthology,SUSE/teuthology,dmick/teuthology,ktdreyer/teuthology,ceph/teuthology,SUSE/teuthology,dmick/teuthology,SUSE/teuthology,dmick/teuthology