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/pipeline/fossa-verify.groovy b/jjb/pipeline/fossa-verify.groovy
index 02662b9..da5c0e9 100644
--- a/jjb/pipeline/fossa-verify.groovy
+++ b/jjb/pipeline/fossa-verify.groovy
@@ -17,7 +17,7 @@
 
   /* no label, executor is determined by JJB */
   agent {
-    label "${params.executorNode}"
+    label "${buildNode}"
   }
 
   // Set so that fossa will know where to run golang tools from
@@ -91,7 +91,7 @@
       }
     }
 
-    stage ("fossa") {
+    stage ("Run FOSSA") {
       steps {
         // catch any errors that occur so that logs can be saved in the next stage
         // docs: https://jenkins.io/doc/pipeline/steps/workflow-basic-steps/#catcherror-catch-error-and-set-build-result-to-failure