add gitea refs to docs

doc/manual/src/plugins/README.md

@@ -100,6 +100,15 @@ Create jobs based on open Gitea pull requests
 
 - `gitea_authorization.<repo-owner>`
 
+## Gitea refs
+
+Hydra plugin for retrieving the list of references (branches or tags) from
+Gitea following a certain naming scheme.
+
+### Configuration options
+
+- `gitea_authorization.<repo-owner>`
+
 ## GitHub pulls
 
 Create jobs based on open GitHub pull requests

nixos-tests.nix

@@ -273,9 +273,19 @@ in
                   }
                 ) prJobNames
               );
+              rels = builtins.fromJSON (builtins.readFile releases);
+              relJobNames = builtins.attrNames rels;
+              relJobset = builtins.listToAttrs (
+                map (
+                  name: {
+                    inherit name;
+                    value = genDrv name;
+                  }
+                ) relJobNames
+              );
             in {
               trivial = genDrv "trivial";
-            } // prJobset
+            } // prJobset // relJobset
           '';
         in
         ''