add boolean whether to run build stage before regression test

Signed-off-by: Bruce Kropp <bruce.kropp@raytheon.com>

.cicd/Jenkinsfile

@@ -28,13 +28,20 @@ def generateStage(nodeLabel) {
             }
         }
         stage("Build on ${nodeLabel}") {
+	    when {
+		beforeAgent true
+		allOf {
+		    expression { params.WM_BUILD }
+		}
+	    }
+
             node(nodeLabel) {
 		script {
                         echo "Building on ${nodeLabel}"
                         currentBuild.displayName = "#${BUILD_NUMBER} ${nodeLabel} <compiler>"
                         //currentBuild.description = ""
 
-                        echo 'bash --login "${WORKSPACE}/.cicd/scripts/wm_build.sh"'
+                        sh 'bash --login "${WORKSPACE}/.cicd/scripts/wm_build.sh"'
                         sh "STAGE_NAME='${env.STAGE_NAME}' " + 'bash --login "${WORKSPACE}/.cicd/scripts/disk_usage.sh"'
 		}
             }
@@ -101,6 +108,7 @@ def parallelStagesMap = modifiedLabels.collectEntries {
 pipeline {
     agent none
     parameters {
+        booleanParam name: 'WM_BUILD', defaultValue: false, description: 'Whether to attempt to compile the model code tests'
         // Regression Test Suite ?
         choice(name: 'WM_OPERATIONAL_TESTS', choices: ['default', 'control_p8', 'cpld_control_p8', 'comprehensive', 'rt.sh', 'none'], description: 'Specify the suite of tests to run')
     }