conf: synchronize internode_compression between scylla.yaml and code
conf: synchronize internode_compression between scylla.yaml and code

Our default is "none", to give reasonable performance, so have scylla.yaml
reflect that.

raphaelsc/scylla,scylladb/scylla,duarten/scylla,raphaelsc/scylla,scylladb/scylla,scylladb/scylla,duarten/scylla,avikivity/scylla,scylladb/scylla,kjniemi/scylla,duarten/scylla,kjniemi/scylla,kjniemi/scylla,avikivity/scylla,raphaelsc/scylla,avikivity/scylla