Remove unused submission ID from perf tests

Update perf test to load steps in parallel.
Update perf test to hit end-points whether they're ready or not
Generalize problem fixtures, select rubric options at random
Add continued assessment to peer step
Add example-based grading to perf test
Update test course and readme

performance/README.rst

@@ -11,7 +11,7 @@ Performance Tests
 2. Import ``course.tar.gz`` into Studio:
 
     * Course ID: 1
-    * Course Org: tim
+    * Course Org: ora2
     * Course Run: 1
 
 3. Enable ``auto_auth`` in the LMS feature flags:
@@ -24,13 +24,15 @@ Performance Tests
         }
     }
 
-4. **Optional**: Increase open file limit:
+4. Log in as a staff user and schedule a training task in the Course Staff Debug of the example based assessment problem.
+
+5. **Optional**: Increase open file limit:
 
 .. code:: bash
 
     ulimit -n 2048
 
-5. Start the Locust server, and point it at the test server.  **NOTE**: You *must* include the trailing slash in the host URL.
+6. Start the Locust server, and point it at the test server.  **NOTE**: You *must* include the trailing slash in the host URL.
 
 .. code:: bash
 
@@ -45,4 +47,4 @@ If your server has basic auth enabled, provide credentials with environment vars
     cd performance
     BASIC_AUTH_USER=foo BASIC_AUTH_PASSWORD=bar locust --host=http://example.com/
 
-6. Visit the `Locust web UI <http://localhost:8089>`_ to start the test.
+7. Visit the `Locust web UI <http://localhost:8089>`_ to start the test.