Synchronize diskimages on builders

Recent changes in how nodepool deletes images mean that we need
a list of all diskimages on every builder (otherwise there is a
small window where a new image build might be deleted by a different
builder).  To correct this, list all diskimages on all builders
(but they still won't build images they shouldn't because they have
different provider configurations).

Change-Id: I89cff1aa9d3b60ee24176cbfea9d1a81e2c976cd

nodepool/nb03.opendev.org.yaml

@@ -122,6 +122,62 @@ diskimages:
       DIB_DISABLE_APT_CLEANUP: '1'
       DIB_DEBOOTSTRAP_EXTRA_ARGS: '--no-check-gpg'
 
+############ CentOS and Fedora (and derivatives) #############
+
+  - name: centos-7
+    elements: []
+
+  - name: centos-8-stream
+    elements: []
+
+  - name: centos-9-stream
+    elements: []
+
+  - name: rockylinux-8
+    elements: []
+
+  - name: fedora-35
+    elements: []
+
+  ############ Debian #############
+
+  - name: debian-buster
+    elements: []
+
+  - name: debian-bullseye
+    elements: []
+
+  ############ Gentoo #############
+
+  - name: gentoo-17-0-systemd
+    elements: []
+
+  ############ openSUSE #############
+
+  - name: opensuse-15
+    elements: []
+
+  ############ Ubuntu #############
+
+  - name: ubuntu-bionic
+    elements: []
+
+  - name: ubuntu-focal
+    elements: []
+
+  - name: ubuntu-jammy
+    elements: []
+
+  - name: ubuntu-xenial
+    elements: []
+
+  ############ openEuler #############
+
+  - name: openEuler-20-03-LTS-SP2
+    elements: []
+
+  ############ arm64 #############
+
   - name: ubuntu-bionic-arm64
     parent: base-debuntu
     elements:

nodepool/nodepool.yaml

@@ -361,3 +361,29 @@ diskimages:
     release: 20.03-LTS-SP2
     env-vars:
       DIB_DISTRIBUTION_MIRROR: 'http://mirror.dfw.rax.opendev.org/openeuler/openEuler-20.03-LTS-SP2/'
+
+  ############ arm64 #############
+
+  - name: ubuntu-bionic-arm64
+    elements: []
+
+  - name: ubuntu-focal-arm64
+    elements: []
+
+  - name: ubuntu-jammy-arm64
+    elements: []
+
+  - name: debian-bullseye-arm64
+    elements: []
+
+  - name: debian-buster-arm64
+    elements: []
+
+  - name: centos-8-stream-arm64
+    elements: []
+
+  - name: centos-9-stream-arm64
+    elements: []
+
+  - name: openEuler-20-03-LTS-SP2-arm64
+    elements: []