scylla-housekeeping support uuid file
scylla-housekeeping support uuid file

Allows scylla-housekeeping getting the uuid from a file instead of the
command line.

If the file is missing no uuid will be used.

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

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