refactor: Use BMC control modules in osinstall (#521)
refactor: Use BMC control modules in osinstall (#521)

The 'set_*_client' modules to issue commands to BMCs include hardening
controls that can benefit osinstall.

The 'bmc_ip' kwarg for 'get_selected_clients' function facilitates
sending BMC calls to individual IP addresses (or all selected
addresses).

Do not update status values during 'addForm'
open-power-ref-design-toolkit/cluster-genesis,open-power-ref-design-toolkit/cluster-genesis