Implement openEuler scripted install

openEuler 24.03 seems closest to el8, so start with that baseline.

Modify el8 handling to recognize a totally missing CA bundle and assume
the original el8 location.

Have osimage recognize openEuler media by presence of openEuler release file.

confluent_osdeploy/el8/initramfs/usr/lib/dracut/hooks/cmdline/01-confluent.sh

@@ -3,10 +3,12 @@ echo -n "" >> /tmp/net.ifaces
 echo -n "" > /tmp/01-autocons.devnode
 BUNDLENAME=/etc/pki/tls/certs/ca-bundle.crt
 if [ ! -e "$BUNDLENAME" ]; then
-    BUNDLENAME=/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem
     mkdir -p /etc/pki/tls/certs
-    ln -s $BUNDLENAME /etc/pki/tls/certs/ca-bundle.crt
-fi
+    if [ -e /etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem ]; then
+        BUNDLENAME=/etc/pki/ca-trust/extracted/pem/tls-ca-bundle.pem
+        ln -s $BUNDLENAME /etc/pki/tls/certs/ca-bundle.crt
+    fi
+fi	
 cat /tls/*.0 >> $BUNDLENAME
 if ! grep console= /proc/cmdline >& /dev/null; then
     autocons=$(/opt/confluent/bin/autocons)

confluent_server/confluent/osimage.py

@@ -318,6 +318,16 @@ def extract_file(archfile, flags=0, callback=lambda x: None, imginfo=(), extract
     return pctdone
 
 
+def check_openeuler(isoinfo):
+    for entry in isoinfo[0]:
+        if 'openEuler-release-24.03' in entry:
+            ver = entry.split('-')[2]
+            arch = entry.split('.')[-2]
+            cat = 'el9'
+            break
+    else:
+        return None
+    return {'name': 'openeuler-{0}-{1}'.format(ver, arch), 'method': EXTRACT, 'category': cat}
 def check_rocky(isoinfo):
     ver = None
     arch = None