Test setting the nova job to centos-9-stream

Depends-On: https://review.opendev.org/c/openstack/tempest/+/831607

Change-Id: Ic8da6ee0313a911d742190ea5b0d4362cb6aef2f

.zuul.yaml

@@ -729,8 +729,7 @@
         # Runs emulation feature functionality test less frequently due
         # to being the initial release and experimental in nature.
         - nova-emulation
-        - tempest-integrated-compute-centos-9-stream:
+        - tempest-centos9-stream-fips
-            irrelevant-files: *nova-base-irrelevant-files
     experimental:
       jobs:
         - ironic-tempest-bfv:
@@ -760,7 +759,7 @@
             irrelevant-files: *nova-base-irrelevant-files
         - devstack-tobiko-nova:
             irrelevant-files: *nova-base-irrelevant-files
-        - tempest-centos8-stream-fips:
+        - tempest-centos9-stream-fips:
             irrelevant-files: *nova-base-irrelevant-files
         - nova-emulation
         - tempest-integrated-compute-centos-9-stream:

tools/test-setup.sh

@@ -27,13 +27,19 @@ function is_rhel8 {
         cat /etc/*release | grep -q 'release 8'
 }
 
+function is_rhel9 {
+    [ -f /usr/bin/dnf ] && \
+        cat /etc/*release | grep -q -e "Red Hat" -e "CentOS" -e "CloudLinux" && \
+        cat /etc/*release | grep -q 'release 9'
+}
+
 function set_conf_line { # file regex value
     sudo sh -c "grep -q -e '$2' $1 && \
             sed -i 's|$2|$3|g' $1 || \
             echo '$3' >> $1"
 }
 
-if is_rhel7 || is_rhel8; then
+if is_rhel7 || is_rhel8 || is_rhel9; then
     # mysql needs to be started on centos/rhel
     sudo systemctl restart mariadb.service