Use new cosa build naming model

coreos/coreos-assembler#1459 is
going to add support for more convenient multiple builds.

Here the `name` is derived simply from the name of the manifest file.
We use the summary for cloud uploads, so that moves to `image.yaml`.

fedora-coreos.yaml

@@ -0,0 +1,32 @@
+ref: fedora/${basearch}/coreos/testing-devel
+include: manifests/fedora-coreos.yaml
+
+releasever: "31"
+
+repos:
+  # these repos are there to make it easier to add new packages to the OS and to
+  # use `cosa fetch --update-lockfile`; but note that all package versions are
+  # still pinned
+  - fedora
+  - fedora-updates
+  - fedora-modular
+  - fedora-updates-modular
+
+# All Fedora CoreOS streams share the same pool for locked files.
+# This will be in fedora-coreos.yaml in the future so it can be more easily be
+# shared between all the streams
+lockfile-repos:
+  - fedora-coreos-pool
+
+add-commit-metadata:
+  fedora-coreos.stream: testing-devel
+
+postprocess:
+  # Disable Zincati and fedora-coreos-pinger on non-production streams
+  # https://github.com/coreos/fedora-coreos-tracker/issues/163
+  - |
+    #!/usr/bin/env bash
+    set -xeuo pipefail
+    mkdir -p /etc/fedora-coreos-pinger/config.d /etc/zincati/config.d
+    echo -e '# https://github.com/coreos/fedora-coreos-tracker/issues/163\nreporting.enabled = false' > /etc/fedora-coreos-pinger/config.d/90-disable-on-non-production-stream.toml
+    echo -e '# https://github.com/coreos/fedora-coreos-tracker/issues/163\nupdates.enabled = false' > /etc/zincati/config.d/90-disable-on-non-production-stream.toml

image.yaml

@@ -1,4 +1,5 @@
 # This replaces image.ks
+summary: "Fedora CoreOS testing-devel"
 # size is the target disk size in GB.
 size: 8
 

manifest.yaml

@@ -0,0 +1 @@
+fedora-coreos.yaml