Add missing attributes to test permissions XML file

[jacobperron]

Resolves #87

[jacobperron]

CI (up to sros2):

• Linux
• Linux-aarch64
• macOS
• Windows

[mjcarroll]

LGTM with Green CI, thanks @jacobperron for getting this so quickly.

[ruffsl]

Seems we forgot to update the test example after updating the schema in #84 like we did for #80 . Still might want to use difflib to report a more readable test error in how the generated files differ.

https://docs.python.org/3.6/library/difflib.html

E.g

def display_diff_markdown(a, b, fromfile, tofile, n=4, lineterm=''):
    aa = a.splitlines()
    bb = b.splitlines()
    diffs = difflib.unified_diff(a=aa, b=bb, fromfile=fromfile, tofile=tofile, n=n, lineterm=lineterm)
    diff = '\n'.join(diffs)
    display(Markdown('``` diff\n' + diff + '\n```'))

display_diff_markdown(a=actual_str,
                      b=expected_str,
                      fromfile='actual',
                      tofile='expected')