Update to use parse_cm.read_or_list_full

[jeanconn]

Description

Update to use parse_cm.read_or_list_full

Interface impacts

Testing

Tested with the 2023.7 ska3-flight release that includes a read_or_list FutureWarning from parse_cm.

Unit tests

• Linux

Independent check of unit tests by [REVIEWER NAME]

• [PLATFORM]:

Functional tests

Confirmed unit tests hit the FutureWarning and this warning shows up with master but not this PR

hopper/tests/test_hopper.py::test_nov0512_as_planned
  /proj/sot/ska/jeanproj/git/hopper/hopper/spacecraft.py:320: FutureWarning: read_or_list is deprecated and will be removed, use read_or_list_full instead
    obsreqs = parse_cm.read_or_list(or_list)

Confirmed no FutureWarning when run with starcheck sot/starcheck#430 to do a recent week.

[taldcroft]

LGTM