Course can be fetched/created without a course_hex

This rewrites File Discovery phase related to studio, add its tests along with the additional feature:
Course retrieval/creation can be done via course_id alone, and course_hex/token is not a requirement anymore.

VEDA_OS01/models.py

@@ -398,6 +398,22 @@ class Course(TimeStampedModel):
 
         return org
 
+    @property
+    def course_runs(self):
+        """
+        Returns the studio course runs associated with this course. Ideally, there should be one entry
+        in this Model for all the course runs in Studio.
+        """
+        course_runs = []
+        if self.local_storedir:
+            course_runs = [
+                course_id.strip()
+                for course_id in self.local_storedir.split(',')
+                if course_id
+            ]
+
+        return course_runs
+
     def __unicode__(self):
         return u'{institution} {edx_class_id} {course_name}'.format(
             institution=self.institution,

bin/loop.py

@@ -79,7 +79,7 @@ class DaemonCli:
                 node_work_directory=node_work_directory
             )
 
-            FD.studio_s3_ingest()
+            FD.discover_studio_ingested_videos()
             FD.about_video_ingest()
             reset_queries()
             x += 1

static_config.yaml

 ---
 # This configuration should only have static settings.
 
+# s3 bucket static prefixes
+edx_s3_processed_prefix: prod-edx/processed/
+edx_s3_rejected_prefix: prod-edx/rejected/
+
 # Celery Info
 onsite_worker: False
 celery_threads: 1

test_config.yaml

 ---
 veda_s3_hotstore_bucket: s3_hotstore_bucket
 veda_deliverable_bucket: s3_deliverable_bucket
+edx_s3_ingest_prefix: ingest/
+edx_s3_ingest_bucket: s3_ingest_bucket
 edx_s3_endpoint_bucket: s3_deliverable_bucket
 multi_upload_barrier: 2000000000
 veda_base_url: https://veda.edx.org