scylla-server.service: Start the scylla-housekeeping
scylla-server.service: Start the scylla-housekeeping

This makes scylla-server to try and start the scylla-housekeeping.

Failing to start the service will not interfere with the scylla-server
start.

Signed-off-by: Amnon Heiman <ed5fc74c4692051ad0b19749fd7cea6ec2d74b9e@scylladb.com>

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