inventory-manage.py --file option can cause the output to overwrite the default inventory file

[Joel Griffiths]

When --file option is specified on the inventory-manage.py command line, the script will load the exact filename specified (path and name). When it saves the changes though, the script will save the file to the same path, but it will use the default inventory filename.

Example:
scripts/inventory-manage.py -r "openstack003_repo_container-8d447a61" -f /tmp/openstack_inventory-non-default.json

This will read /tmp/openstack_inventory-non-default.json, but it will write the changes to /tmp/openstack_inventory.json

[Nolan Brubaker (nolan-brubaker)]

Can confirm this - the loading uses the `load_from_json` common function which takes the user argument. Writing after clearing IPs and removal uses only the filename returned from `load_from_json`, which may not match the CLI argument.