Add config to run pipeline once

Signed-off-by: Keshav Priyadarshi <git@keshav.space>

Author: keshav-space

vulnerabilities/pipelines/__init__.py

@@ -169,6 +169,9 @@ class VulnerableCodeBaseImporterPipeline(VulnerableCodePipeline):
     importer_name = None
     advisory_confidence = MAX_CONFIDENCE
 
+    run_once = False
+    pipeline_version = None
+
     @classmethod
     def steps(cls):
         return (
@@ -262,6 +265,9 @@ class VulnerableCodeBaseImporterPipelineV2(VulnerableCodePipeline):
     repo_url = None
     ignorable_versions = []
 
+    run_once = False
+    pipeline_version = None
+
     @classmethod
     def steps(cls):
         return (