.`cephadm` no longer removes `osd_memory_target` config settings at host level Previously, if `osd_memory_target_autotune` was turned off globally, `cephadm` would remove the values that the user set for `osd_memory_target` at the host level. Additionally, for hosts with FQDN name, even though the crush map uses a short name, `cephadm` would still set the config option using the FQDN. Due to this, users could not manually set `osd_memory_target` at the host level and `osd_memory_target` auto tuning would not work with FQDN hosts. With this fix, the `osd_memory_target` config settings is not removed from `cephadm` at the host level if `osd_memory_target_autotune` is set to `false`. It also always users a short name for hosts when setting host level `osd_memory_target`. If at the host level `osd_memory_target_autotune` is set to `false`, users can manually set the `osd_memory_target` and have the options not be removed by `cephadm`. Additionally, autotuning should now work with hosts added to `cephadm` with FQDN names.