improve Renovate config

This makes Renovate:
- automatically add 🌱 for PR title verifier workflow
- prevents Renovate renaming the title if someone modifies it
- adds changelog entry for easy upstream diff viewing
- adds "ok-to-test" label to allow running tests

Signed-off-by: Tuomo Tanskanen <[email protected]>

Author: tuminoid

renovate.json

@@ -13,6 +13,11 @@
   "prHourlyLimit": 0,
   "prConcurrentLimit": 0,
   "automerge": false,
+  "labels": [
+    "ok-to-test"
+  ],
+  "commitMessagePrefix": ":seedling:",
+  "semanticCommits": "disabled",
   "packageRules": [
     {
       "matchBaseBranches": [
@@ -48,7 +53,9 @@
       "depNameTemplate": "openstack-ironic",
       "packageNameTemplate": "https://opendev.org/openstack/ironic.git",
       "versioningTemplate": "loose",
-      "autoReplaceStringTemplate": "ARG IRONIC_SOURCE={{#if newDigest}}{{{newDigest}}}{{else}}{{{newValue}}}{{/if}} # {{{currentValue}}}"
+      "autoReplaceStringTemplate": "ARG IRONIC_SOURCE={{#if newDigest}}{{{newDigest}}}{{else}}{{{newValue}}}{{/if}} # {{{currentValue}}}",
+      "sourceUrlTemplate": "https://opendev.org/openstack/ironic/src/commit/{{{newDigest}}}",
+      "changelogUrlTemplate": "https://opendev.org/openstack/ironic/compare/{{{currentDigest}}}...{{{newDigest}}}"
     }
   ]
 }