Zuul: Add basic validation script

See: https://pagure.io/fedora-comps/issue/785

.zuul.yaml

@@ -0,0 +1,9 @@
+ - project:
+     check:
+       jobs:
+         - validate
+
+ - job:
+     name: validate
+     description: Validate comps files
+     run: ci/validate.yaml

ci/validate

@@ -0,0 +1,21 @@
+#!/usr/bin/bash
+
+set -euxo pipefail
+
+main() {
+    failure="false"
+
+    make sort || failure="true"
+    make validate || failure="true"
+
+    # Fail if any changes were made to the repo
+    if [[ -n "(git status --short)" ]]; then
+        failure="true"
+    fi
+    if [[ "${failure}" == "true" ]]; then
+        echo "At least one check failed!"
+        exit 1
+    fi
+}
+
+main "${@}"

ci/validate.yaml

@@ -0,0 +1,6 @@
+ - hosts: all
+   tasks:
+     - name: Validate comps files
+       ansible.builtin.command:
+         chdir: "{{ ansible_user_dir }}/{{ zuul.project.src_dir }}"
+         cmd: ci/validate