fix envoy manifest product group keys

...xecutables/pexable/ingest_envoy/ingest_envoy/launchers.py

...xecutables/pexable/ingest_envoy/ingest_envoy/solicitor.py

...t_envoy/test/examples/full_curation_evla_eb_manifest.json

...nvoy/test/examples/full_curation_evla_image_manifest.json

...voy/test/examples/full_curation_evla_image_manifest2.json

...t/input_files/test-full-curation-image-evla-metadata.json

...i/executables/pexable/ingest_envoy/test/test_solicitor.py