Add Simulate-timed-job pragma

Skip-checkpatch: true
Skip-build: true

Quick-build: true

Skip-unit-tests: true

Signed-off-by: Brian J. Murrell <brian.murrell@intel.com>
Skip-test: true

Author: brianjmurrell

vars/startedByTimer.groovy

@@ -1,3 +1,4 @@
+/* groovylint-disable VariableName */
 // vars/startedByTimer.groovy
 
 /**
@@ -6,8 +7,16 @@
  * This needs to be here rather than in pipeline-lib or Jenkinsfile due to
  * Scripts not permitted to use method net.sf.json.JSON isEmpty.
  */
-Boolean call(Map config = [:]) {
+Boolean call() {
 
-  return !currentBuild.getBuildCauses('hudson.triggers.TimerTrigger$TimerTriggerCause').isEmpty()
+  Boolean simulate_timed_job = cachedCommitPragma('Simulate-timed-job') == 'true'
+
+  if (simulate_timed_job) {
+      println('Simulating timed job behaviour')
+  }
+
+  return simulate_timed_job ||
+         /* groovylint-disable-next-line UnnecessaryGetter */
+         !currentBuild.getBuildCauses('hudson.triggers.TimerTrigger$TimerTriggerCause').isEmpty()
 
 }