Adapt the checks fetcher to an API change in fetch()`

Change-Id: Ib1ed5e107bc45a1929c64af414c8d61b9ca4d8bc
diff --git a/gr-checks/gr-checks-reboot.js b/gr-checks/gr-checks-reboot.js
index d32f4a5..4fd0720 100644
--- a/gr-checks/gr-checks-reboot.js
+++ b/gr-checks/gr-checks-reboot.js
@@ -31,7 +31,8 @@
     return this.fetch(this.changeNumber, this.patchsetNumber);
   }
 
-  async fetch(changeNumber, patchsetNumber) {
+  async fetch(changeData) {
+    const {changeNumber, patchsetNumber} = changeData;
     this.changeNumber = changeNumber;
     this.patchsetNumber = patchsetNumber;
     console.log('Issuing REBOOT http call.');
diff --git a/gr-checks/gr-checks.js b/gr-checks/gr-checks.js
index e439014..39152f5 100644
--- a/gr-checks/gr-checks.js
+++ b/gr-checks/gr-checks.js
@@ -61,8 +61,7 @@
   const checksApi = plugin.checks();
   const fetcher = new RebootFetcher(plugin.restApi());
   checksApi.register({
-    fetch: (changeNumber, patchsetNumber) => fetcher.fetch(changeNumber,
-        patchsetNumber)
+    fetch: (data) => fetcher.fetch(data)
   });
 }