Fix flake8 E305 errors.

awx/plugins/library/scan_files.py

@@ -161,4 +161,5 @@ def main():
     results = dict(ansible_facts=dict(files=files))
     module.exit_json(**results)
 
+
 main()

awx/plugins/library/scan_packages.py

@@ -85,4 +85,5 @@ def main():
         results = dict(skipped=True, msg="Unsupported Distribution")
     module.exit_json(**results)
 
+
 main()

awx/plugins/library/scan_services.py

@@ -190,4 +190,5 @@ def main():
             results['msg'] = "WARNING: Could not find status for all services. Sometimes this is due to insufficient privileges."
     module.exit_json(**results)
 
+
 main()