network objects: don't add the project name to the openstack resource name
In the tofu resource delcaration we are iterating a map, in which each key is in the pattern "projectname_objectname", where only the objectname is supposed to make it into the final openstack resource name.
Delete the project prefix before creating the openstack resource.
Bug: T375283 Signed-off-by: Arturo Borrero Gonzalez aborrero@wikimedia.org