This subpath (//ops/monitoring/lib/grafonnet) comes from the following Git repository:

    repository: https://github.com/grafana/grafonnet-lib.git
    revision: ff69572caf78c3163980d0d723c85a722eab73d9
    subpath: grafonnet-7.0

The files contained in this subdirectory are license under the Apache 2.0 License (see //third_party/licenses/Apache-2.0.txt).