LU-16322: build: Add client build support for openEuler

LU-16322: build: Add client build support for openEuler

The kernel of current openEuler LTS version 22.03 is based on Linux
5.10.0 which is already supported in Lustre master. Thus we only need
to add build support for openEuler client.

OpenEuler Linux although is not compatible with RHEL, but it uses the
same package manager DNF/tools as RHEL and references the package
naming of RHEL. Thus we can reuse most of the RHEL build logic/scripts
for openEuler client building.

OpenEuler Linux is becoming the mainstream Linux distro in China. So
adding support for it makes sense for the users. For more details about
it see: https://www.openeuler.org/en/.

Test-Parameters: trivial
Change-Id: I8e8b59d36e566c6e49b12346c2fde985153f014d
Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org>
Reviewed-on: https://review.whamcloud.com/c/fs/lustre-release/+/49187
Reviewed-by: Oleg Drokin <green@whamcloud.com>
Reviewed-by: Jian Yu <yujian@whamcloud.com>
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>