Include _solib_local for MKL-DNN libs (#14709)

* Include _solib_local for MKL-DNN libs

`_solib_local/libmklml_intel.so` is not getting included in the package.
`build_pip_package.sh` has been updated to copy `*solib*` instead of just `_solib_k8`, so just update `setup.py` to include it.
See https://github.com/tensorflow/tensorflow/issues/13711 for details.

* Don't glob for `_solib_local` and `_solib_k8`

`find_files` doesn't accept globs for `root`.