test: Add basic quadlet test

tests/kola/containers/quadlet/config.bu

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+variant: fcos
+version: 1.4.0
+storage:
+  files:
+    - path: /etc/containers/systemd/test.container
+      contents:
+        inline: |
+          [Unit]
+          Description=A minimal container
+
+          [Container]
+          Image=registry.fedoraproject.org/fedora-minimal
+          Volume=test.volume:/data
+          Exec=sleep 60
+
+          [Service]
+          Restart=always
+
+          [Install]
+          WantedBy=multi-user.target default.target
+    - path: /etc/containers/systemd/test.volume
+      contents:
+        inline: |
+          [Volume]
+          User=root
+          Group=root
+          Label=org.test.Key=value
+    - path: /etc/containers/systemd/test.network
+      contents:
+        inline: |
+          [Network]
+          Subnet=172.16.0.0/24
+          Gateway=172.16.0.1
+          IPRange=172.16.0.0/28
+          Label=org.test.Key=value

tests/kola/containers/quadlet/data/commonlib.sh

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+../../../data/commonlib.sh

tests/kola/containers/quadlet/test.sh

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+#!/bin/bash
+## kola:
+##   # We're pulling a container image from Quay.io
+##   tags: "platform-independent needs-internet"
+#
+# Ensure that basic quadlet functionality works
+
+set -xeuo pipefail
+
+. $KOLA_EXT_DATA/commonlib.sh
+
+if [[ "$(podman inspect systemd-test | jq -r '.[0].ImageName')" != "registry.fedoraproject.org/fedora-minimal:latest" ]]; then
+    fail "Container not correctly created"
+fi
+
+if [[ "$(podman volume inspect systemd-test | jq -r '.[0].Labels."org.test.Key"')" != "value" ]]; then
+    fail "Volume not correctly created"
+fi
+
+podman network ls
+
+ok "Successfully test basic quadlet functionality"