added GRM discard action

src/tasks/gitreleasemanager/discard.ts

@@ -0,0 +1,4 @@
+import "reflect-metadata";
+import { discard } from "./main";
+
+discard();

src/tasks/gitreleasemanager/main.ts

@@ -38,4 +38,19 @@ export async function create() {
     } catch (error) {
         buildAgent.setFailed(error.message, true);
     }
+}
+
+export async function discard() {
+    try {
+
+        gitReleaseManagerTool.disableTelemetry();
+
+        const settings = Settings.getDiscardSettings(buildAgent);
+
+        await gitReleaseManagerTool.discard(settings);
+
+        buildAgent.setSucceeded("GitVersionManager discarded release successfully", true);
+    } catch (error) {
+        buildAgent.setFailed(error.message, true);
+    }
 }