Description of problem:
Command "nodectl info" display error after RHVH installation,

# nodectl info
/usr/lib64/python3.6/re.py:212: FutureWarning: split() requires a non-empty pattern match.
  return _compile(pattern, flags).split(string, maxsplit)
bootloader: 
  default: rhvh-4.4.0.3-0.20190926.0 (4.18.0-146.el8.x86_64)
  entries: 
Traceback (most recent call last):
  File "/usr/lib64/python3.6/runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "/usr/lib64/python3.6/runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "/usr/lib/python3.6/site-packages/nodectl/__main__.py", line 42, in <module>
    CliApplication()
  File "/usr/lib/python3.6/site-packages/nodectl/__init__.py", line 200, in CliApplication
    return cmdmap.command(args)
  File "/usr/lib/python3.6/site-packages/nodectl/__init__.py", line 118, in command
    return self.commands[command](**kwargs)
  File "/usr/lib/python3.6/site-packages/nodectl/__init__.py", line 76, in info
    Info(self.imgbased, self.machine).write()
  File "/usr/lib/python3.6/site-packages/nodectl/info.py", line 102, in write
    pretty_print(k)
  File "/usr/lib/python3.6/site-packages/nodectl/info.py", line 87, in pretty_print
    pretty_print(item, indent+2)
  File "/usr/lib/python3.6/site-packages/nodectl/info.py", line 85, in pretty_print
    items.sort(key=lambda x: x[1]["index"])
AttributeError: 'dict_items' object has no attribute 'sort'



Version-Release number of selected component (if applicable):
redhat-virtualization-host-4.4.0-20190926.1.el8_1
imgbased-1.2.4-0.1.el8ev.noarch

How reproducible:
100%

Steps to Reproduce:
1. Install RHVH-4.4-20190926.3-RHVH-x86_64-dvd1.iso via anaconda GUI.
2. Reboot
3. Login RHVH and check "nodectl info".

Actual results:
"nodectl info" display error after RHVH installation

Expected results:
"nodectl info" display correct.

Additional info: