refactor test structure

...i/executables/pexable/casa_envoy/test/input_files/PPR.xml

...bles/pexable/casa_envoy/test/input_files/cmsimage-PPR.xml

...s/pexable/casa_envoy/test/input_files/image-metadata.json

...cutables/pexable/casa_envoy/test/input_files/restore.json

...executables/pexable/casa_envoy/test/input_files/test.json

apps/cli/executables/pexable/casa_envoy/test/test_auditor.py

...li/executables/pexable/casa_envoy/test/test_casa_envoy.py

...li/executables/pexable/casa_envoy/test/test_foundation.py

...cli/executables/pexable/casa_envoy/test/test_launchers.py

schema/versions/7200d0d19938_add_restore_capability.py