misc: add optional path param to create_simple_monmap()
misc: add optional path param to create_simple_monmap()

This will let us provision multiple clusters in parallel by using
different names for the monmap file.

Signed-off-by: Josh Durgin <1442af5e32b56bc0fa9c40ad9e4d67aeb05f1e26@redhat.com>

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