Add openEuler 22.03 LTS support

openEuler 20.03 LTS SP2 support was removed from devstack in last
few months due to its python version is too old and the CI job
always fail. And openEuler 20.03 LTS SP2 was out of maintainer in May
2022 by openEuler community.

The newest LTS version was released in March 2022 called 22.03 LTS.
This release will be maintained for at least 2 years. And the python
version is 3.9 which works well for devstack.

This Patch add the openEuler distro support back. And add the related
CI job to make sure its works well.

Change-Id: I99c99d08b4a44d3dc644bd2e56b5ae7f7ee44210
diff --git a/lib/apache b/lib/apache
index 705776c..dd8c9a0 100644
--- a/lib/apache
+++ b/lib/apache
@@ -95,7 +95,7 @@
     # didn't fix Python 3.10 compatibility before release.  Should be
     # fixed in uwsgi 4.9.0; can remove this when packages available
     # or we drop this release
-    elif is_fedora && ! [[ $DISTRO =~ f36 ]]; then
+    elif is_fedora && ! is_openeuler && ! [[ $DISTRO =~ f36 ]]; then
         # Note httpd comes with mod_proxy_uwsgi and it is loaded by
         # default; the mod_proxy_uwsgi package actually conflicts now.
         # See: