Fix for creating partition on partition:
now partition would be created on parent device.
Code fixes.
Signed-off-by: Slawomir Jankowski <slawomir.jankowski@intel.com>
Check if non-root user can change OpenCAS service status by casctl.
Check if non-root user can use casadm.
Signed-off-by: Ostrokrzew <slawomir.jankowski@intel.com>