Revert "Revert "batcave02: add a new batcave02 that is rhel9""

This reverts commit 4a90c1a152.
So, lets try this again now. ;)

inventory/host_vars/batcave02.iad2.fedoraproject.org

@@ -0,0 +1,18 @@
+---
+datacenter: iad2
+eth0_ipv4_gw: 10.3.163.254
+eth0_ipv4_ip: 10.3.163.112
+ks_repo: http://38.145.60.16/repo/rhel/RHEL9-x86_64/
+ks_url: http://38.145.60.16/repo/rhel/ks/kvm-rhel
+sar_output_file: koji.json
+#host_backup_targets: ['/git', '/mnt/fedora/app/attachments']
+
+# GDPR SAR variables - koji
+sar_script: /usr/local/bin/koji_sar.py
+sar_script_user: root
+# Add VPN host name as alt name for SSH cert.  Useful when you need to
+# SSH into batcave through VPN, like from bastion in a different DC.
+ssh_hostnames:
+  - batcave01.vpn.fedoraproject.org
+vmhost: vmhost-x86-01.iad2.fedoraproject.org
+volgroup: /dev/vg_guests

inventory/inventory

@@ -254,6 +254,7 @@ kojipkgs02.iad2.fedoraproject.org
 
 [infracore]
 batcave01.iad2.fedoraproject.org
+batcave02.iad2.fedoraproject.org
 log01.iad2.fedoraproject.org
 noc01.iad2.fedoraproject.org
 noc02.fedoraproject.org
@@ -265,10 +266,12 @@ log01.iad2.fedoraproject.org
 
 [batcave]
 batcave01.iad2.fedoraproject.org
+batcave02.iad2.fedoraproject.org
 batcave13.rdu2.fedoraproject.org
 
 [batcave_iad2]
 batcave01.iad2.fedoraproject.org
+batcave02.iad2.fedoraproject.org
 
 [ipa]
 ipa01.iad2.fedoraproject.org
@@ -733,6 +736,7 @@ noc01.iad2.fedoraproject.org
 bastion01.iad2.fedoraproject.org
 bastion02.iad2.fedoraproject.org
 batcave01.iad2.fedoraproject.org
+batcave02.iad2.fedoraproject.org
 certgetter01.iad2.fedoraproject.org
 db-openqa01.iad2.fedoraproject.org
 dl01.iad2.fedoraproject.org