added unit tst for getProcessStatus(), fixed scoping issue in processmanager

src/main/java/JobServ/ProcessManager.java

@@ -264,7 +264,7 @@ class ProcessManager {
      * (AKA when user hits control c in the shell)
      * releases resources held in the processController objects
      */
-    private void shutdown() {
+    public void shutdown() {
         this.processQueueMutex = true;
 
         Iterator<HashMap.Entry<Integer, ProcessController>> iterator = this.processMap.entrySet().iterator();