grpc: add licenses from third party components

There are 9 (out of 24) third party components used for build.
Add their licenses.

SUB third_party/abseil-cpp            .. not used (unbundled)
    third_party/address_sorting       .. USED
SUB third_party/benchmark             .. not used (testing)
SUB third_party/bloaty                .. not used (testing)
SUB third_party/boringssl-with-bazel  .. not used (unbundled; openssl)
    third_party/cares                 .. not used (unbundled)
SUB third_party/envoy-api             .. USED
SUB third_party/googleapis            .. USED
SUB third_party/googletest            .. not used (testing)
    third_party/objective_c           .. not used (build helpers)
SUB third_party/opencensus-proto      .. USED
SUB third_party/opentelemetry         .. not used (gRPC_BUILD_GRPCPP_OTEL_PLUGIN)
SUB third_party/opentelemetry-cpp     .. not used (gRPC_BUILD_GRPCPP_OTEL_PLUGIN)
SUB third_party/protobuf              .. not used (unbundled)
SUB third_party/protoc-gen-validate   .. USED
    third_party/py                    .. not used (build helpers)
    third_party/rake-compiler-dock    .. not used (build helpers)
SUB third_party/re2                   .. not used (unbundled)
    third_party/toolchains            .. not used (build helpers)
    third_party/upb                   .. USED
    third_party/utf8_range            .. USED
SUB third_party/xds                   .. USED
    third_party/xxhash                .. USED
SUB third_party/zlib                  .. not used (unbundled)

* address_sorting - BSD-3-CLAUSE (already in main license)
  https://github.com/grpc/grpc/blob/master/third_party/address_sorting/LICENSE
* envoy-api - Apache-2.0 (already in main license)
  https://github.com/envoyproxy/data-plane-api/blob/4de3c74cf21a9958c1cf26d8993c55c6e0d28b49/LICENSE
* googleapis - Apache-2.0 (already in main license)
  https://github.com/googleapis/googleapis/blob/fe8ba054ad4f7eca946c2d14a63c3f07c0b586a0/LICENSE
* opencensus-proto - Apache-2.0 (already in main license)
  https://github.com/census-instrumentation/opencensus-proto/blob/4aa53e15cbf1a47bc9087e6cfdca214c1eea4e89/LICENSE
* protoc-gen-validate - Apache-2.0 (already in main license)
  https://github.com/bufbuild/protoc-gen-validate/blob/32c2415389a3538082507ae537e7edd9578c64ed/LICENSE
* upb - BSD-3-Clause (already present in main LICENSE)
  there is a note in all files
* utf8_range - MIT
  https://github.com/grpc/grpc/blob/master/third_party/utf8_range/LICENSE
* xds - Apache-2.0 (already in main license)
  https://github.com/cncf/xds/blob/3a472e524827f72d1ad621c4983dd5af54c46776/LICENSE
* xxhash - BSD-2-Clause
  https://github.com/grpc/grpc/blob/master/third_party/xxhash/LICENSE

License-Update: added missing licenses

Signed-off-by: Peter Marko <peter.marko@siemens.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

0 files changed, 0 insertions, 0 deletions