Consistency pass on naming in JJB

- Name of the pipeline script when parameterized: `pipeline-script`
- Name of executor the job is running on: `build-node` (or `buildNode` if
  in a pipeline job)

Change-Id: Id069a2d3f17dc5dbd7259e0ed046b72017da0538
diff --git a/jjb/verify/xos.yaml b/jjb/verify/xos.yaml
index 62340c4..93e0e1e 100644
--- a/jjb/verify/xos.yaml
+++ b/jjb/verify/xos.yaml
@@ -33,7 +33,7 @@
           build-timeout: 45
           build-node: 'ubuntu16.04-basebuild-2c-4g'
       - 'api-test':
-          pipeline_script: 'xos-core.groovy'
+          pipeline-script: 'xos-core.groovy'
 
 - job-group:
     name: 'publish-xos-jobs'