scylla_cpuscaling_setup: add --force option
scylla_cpuscaling_setup: add --force option

To building Ubuntu AMI with CPU scaling configuration, we need force
running mode for scylla_cpuscaling_setup, which run setup without
checking scaling_governor support.

See scylladb/scylla-machine-image#204

Closes #9326

scylladb/scylla,scylladb/scylla,scylladb/scylla,scylladb/scylla