Update scylla-ami submodule
Update scylla-ami submodule

* dist/ami/files/scylla-ami 67293ba...5200f3f (1):
  > Add custom script options to AMI user-data

scylladb/scylla,duarten/scylla,scylladb/scylla,duarten/scylla,avikivity/scylla,scylladb/scylla,avikivity/scylla,avikivity/scylla,scylladb/scylla,duarten/scylla