[all_sites] Remove references to storage5k

data/grid5000/sites/grenoble/grenoble.json

data/grid5000/sites/lille/lille.json

data/grid5000/sites/luxembourg/luxembourg.json

data/grid5000/sites/lyon/lyon.json

data/grid5000/sites/nancy/nancy.json

data/grid5000/sites/nantes/nantes.json

data/grid5000/sites/rennes/rennes.json

data/grid5000/sites/sophia/sophia.json

input/grid5000/sites/grenoble/grenoble.yaml

input/grid5000/sites/lille/lille.yaml

input/grid5000/sites/luxembourg/luxembourg.yaml

input/grid5000/sites/lyon/lyon.yaml

input/grid5000/sites/nancy/nancy.yaml

input/grid5000/sites/nantes/nantes.yaml

input/grid5000/sites/rennes/rennes.yaml

input/grid5000/sites/sophia/sophia.yaml

lib/refrepo/valid/input/schemas/schema-site.yaml