[MCCS-399] MR feedback 20210511

docs/source/index.rst

docs/source/state/op_state_model.rst

src/ska_tango_base/base_device.py

src/ska_tango_base/commands.py

src/ska_tango_base/component_manager.py

src/ska_tango_base/csp_subelement_obs_component_manager.py

src/ska_tango_base/csp_subelement_obsdevice.py

src/ska_tango_base/csp_subelement_subarray.py

...a_tango_base/csp_subelement_subarray_component_manager.py

src/ska_tango_base/obs_device.py

src/ska_tango_base/state/admin_mode_model.py

src/ska_tango_base/state/csp_subelement_obs_state_model.py

src/ska_tango_base/state/op_state_model.py

src/ska_tango_base/state/subarray_obs_state_model.py

src/ska_tango_base/subarray_component_manager.py

src/ska_tango_base/subarray_device.py

tests/conftest.py

tests/state/conftest.py

tests/state/data/subarray_state_machine.json

tests/state/test_csp_subelement_obs_state_model.py