Remove old distros from dev cluster template. #1385

scripts/vagrant/dev-cluster/Vagrantfile

@@ -9,13 +9,7 @@
 # An array of operating system names; see the "boxes" hash below for a
 # full list of valid values.  Each element in the array will be turned
 # into a VM running that system.  These are a few popular choices:
-boxes = [ "centos7" ]
-#boxes = [ "centos7", "centos7" ]
-#boxes = [ "debian9" ]
-#boxes = [ "debian10"]
-#boxes = [ "debian9", "debian9" ]
-#boxes = [ "centos7", "debian9" ]
-
+boxes = [ "alma9" ]
 
 # Prefix for VM names.  This should be unique across clusters on
 # the same host.
@@ -45,19 +39,14 @@ require 'etc'
 valid_boxes = Hash[
   # RedHat and Derivatives
   "alma8" => "almalinux/8",
-  "centos7" => "bento/centos-7",
-  "centos8" => "bento/centos-8",
-  "oracle7" => "generic/oracle7",
-  "oracle8" => "generic/oracle8",
-  "rhel7" => "generic/rhel7",
-  "rhel8" => "generic/rhel8",
-  # Debian and Derivatives
-  "debian8" => "generic/debian8",
-  "debian9" => "generic/debian9",
+  "alma9" => "almalinux/8",
+  # Debian
   "debian10" => "geerlingguy/debian10",
-  "ubuntu16" => "ubuntu/xenial64",
-  "ubuntu18" => "ubuntu/bionic64",
+  "debian11" => "geerlingguy/debian12",
+  "debian12" => "geerlingguy/debian12",
+  # Ubuntu
   "ubuntu20" => "ubuntu/focal64",
+  "ubuntu22" => "ubuntu/jammy64",
 ]