v1.4.0

1. Add container support
2. Add support for Centos7.1 kernel driver v3.10.0-229, Centos7.4 kernel driver v3.10.0-693, kernel driver v4.14.81, and Centos7.7 kernel driver v3.10.0-1062
3. Add partial retrieve support
4. Add new key generator of kv_bench to guarantee the keys to be read exist
5. Multiple bug fix
6. Remove the sample code and test code of KV ADI layer