Respect BSD-3-License please

[CsatariGergely]

As it was recognised during the CNCF Sanbox review (https://github.com/cncf/sandbox/issues/15) some parts of this code are slightly modified variant of CPU-Pooler. The original CPU-Pooler code was releases under the BSD-3-Clause license. Please follow the license obligations requested by the license. I copy them here for your convenience:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

• Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

• Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

Thanks

[dongjiang1989]

@CsatariGergely Complete respect BSD-3-License. The following modifications：

1. Redistributions of source code with third_party/forked/nokia/CPU-Pooler directory;
2. Add Copyright.md base on third_party.