scylla-housekeeping: add configuration for api-address
scylla-housekeeping: add configuration for api-address

This patch makes the api address and port configurable.

Fixes #2332

Message-Id: <833986f31adfa8fe51f645535524e1fe67e177b6@scylladb.com>

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