feat: add overcloud service prechecks script

This piece of `kayobe-automation` could be used during `PR/MR` to check that any proposed configuration will satisfy all prechecks.

Author: jackhodgkiss

scripts/overcloud-service-prechecks.sh

@@ -0,0 +1,24 @@
+#!/bin/bash
+
+set -euE
+set -o pipefail
+
+PARENT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+source "${PARENT}/../functions"
+
+
+function main {
+    kayobe_init
+    args=()
+    git merge --no-edit $1
+    run_kayobe overcloud service prechecks "${args[@]}" "${@}"
+}
+
+if [[ "${BASH_SOURCE[0]}" == "${0}" ]]; then
+    if [ "$#" -lt 1 ]; then
+        die $LINENO "Error: You must provide a git ref." \
+            "Usage: overcloud-service-prechecks.sh <git ref>"
+    fi
+    main "$1"
+fi