Fix issues_url in manifest, for CI purposes

metadata.json

@@ -6,7 +6,7 @@
   "license": "TBD",
   "source": "https://gitlab.it.liu.se/pm-liuit/skadereg/tree/production",
   "project_page": "https://gitlab.it.liu.se/pm-liuit/skadereg",
-  "issues_url": null,
+  "issues_url": "https://gitlab.it.liu.se/pm-liuit/skadereg/issues",
   "dependencies": [
     { "name": "puppetlabs-stdlib", "version_requirement": ">= 1.0.0" }
   ],