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/synopsys-check.yaml b/jjb/synopsys-check.yaml
index 9682bca..ea66e53 100644
--- a/jjb/synopsys-check.yaml
+++ b/jjb/synopsys-check.yaml
@@ -23,7 +23,7 @@
 
     parameters:
       - string:
-          name: executorNode
+          name: buildNode
           default: '{build-node}'
           description: 'Name of the Jenkins node to run the job on'
 
@@ -87,7 +87,7 @@
 
     parameters:
       - string:
-          name: executorNode
+          name: buildNode
           default: '{build-node}'
           description: 'Name of the Jenkins node to run the job on'