cmdline.py: Fix clean-up call method
cmdline.py: Fix clean-up call method

I missed a spot where we were still calling shutdown which no longer
exists do to me renaming the startup/shutdown methods.

This allows standalone again.

Signed-off-by: Tony Asleson <1ef2d381aa56d512126ddaacc29e68136e4fdf55@redhat.com>

jumitche/libstoragemgmt,tasleson/libstoragemgmt,tasleson/libstoragemgmt,jumitche/libstoragemgmt,libstorage/libstoragemgmt,libstorage/libstoragemgmt,lazy404/libstoragemgmt,lazy404/libstoragemgmt,cathay4t/libstoragemgmt,lazy404/libstoragemgmt,libstorage/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,joehandzik/libstoragemgmt,lazy404/libstoragemgmt,joehandzik/libstoragemgmt,libstorage/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,libstorage/libstoragemgmt,tasleson/libstoragemgmt,jumitche/libstoragemgmt,cathay4t/libstoragemgmt,tasleson/libstoragemgmt,cathay4t/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,tasleson/libstoragemgmt,joehandzik/libstoragemgmt,jumitche/libstoragemgmt,joehandzik/libstoragemgmt,cathay4t/libstoragemgmt,cathay4t/libstoragemgmt,HP-Scale-out-Storage/libstoragemgmt,jumitche/libstoragemgmt