[Lustre] Build zfs rpm pkgs on openEuler OBS master branch

Rpms built on openEuler OBS : http://119.3.219.20:82/openEuler:/Mainline/standard_aarch64/src/

OBS multibuild configuration is ok. Now pkgs can be built and installed successfully.

See https://gitee.com/src-openeuler/zfs/pulls/2 .

PR sent:
https://gitee.com/src-openeuler/zfs/pulls/1

Src repo created: https://gitee.com/src-openeuler/zfs