[ADF-4274] Should be able to reassign the removed user when starting a new task. (#4591)

* C305050 automated

* added the api call to delete the tasks created in afterAll() method and also creating a new user and using that in the Tests and deleting the user in the end rather than using 'Super Admin' and reduce the dependency on env configuration.

* linting fixes

lib/testing/src/lib/core/actions/identity/tasks.service.ts

@@ -86,6 +86,16 @@ export class TasksService {
         return data;
     }
 
+    async getTaskId(taskName, appName) {
+        const path = '/' + appName + '/query/v1/tasks';
+        const method = 'GET';
+
+        const queryParams = {name: taskName}, postBody = {};
+
+        const data = await this.api.performBpmOperation(path, method, queryParams, postBody);
+        return data.list.entries[0].entry.id;
+    }
+
     async createStandaloneSubtask(parentTaskId, appName, name) {
         const path = '/' + appName + '/rb/v1/tasks';
         const method = 'POST';