add openeuler support

[Z572]

require ros-infrastructure/rospkg#260
ros/rosdistro#36933

[tfoote]

Overall we're happy to add support for additional OSs. However as I haven't heard of this one. Can you please provide a little bit more context as to the user base and the package management system and database. In particular I see that it uses the DNF and YUM installers. Does it track/follow/use one of the other package databases or does it have it's own package database for example we have a lot of rhel clones that don't need separate database entries? This will be important that we have a set of rules .

[Z572]

openEuler (formerly EulerOS) is a Red-Hat-like Linux distribution. It is the successor of Huawei's EulerOS.

openEuler is an open source project incubated and operated by the OpenAtom Foundation.

It use DNF as package-management, but no base on other distribution, many package name are different from rhel, like RHEL named "libzstd-devel",but openEuler named "zstd-dev"

have some linux Commercial Editions base on it, see https://www.openeuler.org/en/download/commercial-release/

official website: https://www.openeuler.org/en/
use case: https://www.openeuler.org/en/showcase/
you can search package from https://pkgmanage.openeuler.org/Packagemanagement or https://oepkgs.net/