Add more 'zhmc lpar' commands
Add more 'zhmc lpar' commands

Following commands were added:
- zhmc lpar stop
- zhmc lpar psw-restart
- zhmc lpar scsi-load
- zhmc lpar scsi-dump

Signed-off-by: Juergen Leopold <2ef4e6fc356c4a0c570adb4e83b64b658f380892@de.ibm.com>

zhmcclient/zhmccli