Devstack: Make boot volume optional on openstack

This makes it possible to choose if the devstack should be created with
or without volumes when running on openstack. It also bumps the default
image name to ubuntu-2404-lts to match the other resource types.

Signed-off-by: Lennart Jern <lennart.jern@est.tech>

hack/ci/openstack.sh

@@ -24,13 +24,14 @@ set -x -o errexit -o nounset -o pipefail
 # SSH_PRIVATE_KEY_FILE
 # OPENSTACK_PUBLIC_NETWORK
 # OPENSTACK_PUBLIC_IP (optional, will be created on OPENSTACK_PUBLIC_NETWORK if not defined)
+# USE_VOLUMES (optional, default true)
 
 function cloud_init {
     OPENSTACK_NETWORK_NAME=${OPENSTACK_NETWORK_NAME:-${CLUSTER_NAME}-network}
     OPENSTACK_SUBNET_NAME=${OPENSTACK_SUBNET_NAME:-${CLUSTER_NAME}-subnet}
     OPENSTACK_SECGROUP_NAME=${OPENSTACK_SECGROUP_NAME:-${CLUSTER_NAME}-secgroup}
     OPENSTACK_ROUTER_NAME=${OPENSTACK_ROUTER_NAME:-${CLUSTER_NAME}-router}
-    OPENSTACK_IMAGE_NAME=${OPENSTACK_IMAGE_NAME:-ubuntu-2204-lts}
+    OPENSTACK_IMAGE_NAME=${OPENSTACK_IMAGE_NAME:-ubuntu-2404-lts}
 
     OPENSTACK_FLAVOR=${OPENSTACK_FLAVOR:-m1.xlarge}
     OPENSTACK_FLAVOR_controller=${OPENSTACK_FLAVOR_controller:-$OPENSTACK_FLAVOR}
@@ -109,24 +110,29 @@ function create_vm {
     secgroupid=${secgroupid:-${OPENSTACK_SECGROUP_NAME}}
     imageid=${imageid:-${OPENSTACK_IMAGE_NAME}}
 
-    local volumename="${CLUSTER_NAME}-${name}"
-    local volumeid
-    if ! volumeid=$(openstack volume show "$volumename" -f value -c id 2>/dev/null)
-    then
-        volumeid=$(openstack volume create -f value -c id --size 200  \
-            --bootable --image "$imageid" "$volumename")
-        while [ "$(openstack volume show "$volumename" -f value -c status 2>/dev/null)" != "available" ]; do
-            echo "Waiting for volume to become available"
-            sleep 5
-        done
+    local storage_medium_flag="--image=$imageid"
+
+    if [ "${USE_VOLUMES:-true}" == "true" ]; then
+      local volumename="${CLUSTER_NAME}-${name}"
+      local volumeid
+      if ! volumeid=$(openstack volume show "$volumename" -f value -c id 2>/dev/null)
+      then
+          volumeid=$(openstack volume create -f value -c id --size 200  \
+              --bootable --image "$imageid" "$volumename")
+          while [ "$(openstack volume show "$volumename" -f value -c status 2>/dev/null)" != "available" ]; do
+              echo "Waiting for volume to become available"
+              sleep 5
+          done
+      fi
+      storage_medium_flag="--volume=$volumeid"
     fi
 
     local serverid
     if ! serverid=$(openstack server show "$servername" -f value -c id 2>/dev/null)
     then
         serverid=$(openstack server create -f value -c id \
             --os-compute-api-version 2.52 --tag "$CLUSTER_NAME" \
-            --flavor "$flavor" --volume "$volumeid" \
+            --flavor "$flavor" "$storage_medium_flag" \
             --nic net-id="$networkid",v4-fixed-ip="$ip" \
             --security-group "$secgroupid" \
             --user-data "$userdata" \