Disable cstates for bare metal machines

Add kernel command line parameter to disable cstates on compute and
storage bare metal machines. This should increase the network throughput
on 10G NICs but may also increase power consumption.

SMBCAP-2664
Merge pull request #4 from TelekomCloud/feature/SMBCAP-2664_disable-cstates

Feature/smbcap 2664 disable cstates