GRAILS-9535 - make stop-app work in interactive mode

There is still an issue with the "exit" command when running in forked mode.  This isn't mentioned in the JIRA but it doesn't work.  That is really a separate issue.

grails-bootstrap/src/main/groovy/org/codehaus/groovy/grails/cli/interactive/InteractiveMode.groovy

@@ -114,8 +114,13 @@ class InteractiveMode {
                     }
                     else if ("quit".equals(trimmed)) {
                         goodbye()
-                    }
-                    else if (("exit".equals(trimmed)) || ("stop-app".equals(trimmed))) {
+                    } else if('stop-app'.equals(trimmed)) {
+                        if(settings.forkSettings?.get('run')) {
+                            parseAndExecute 'stop-app'
+                        } else {
+                            stopApp()
+                        }
+                    } else if ("exit".equals(trimmed)) {
                         exit()
                     }
                     else if (scriptName.startsWith("open ")) {
@@ -175,7 +180,7 @@ class InteractiveMode {
         System.exit(0)
     }
 
-    protected void exit() {
+    protected void stopApp() {
         if (grailsServer) {
            try {
                updateStatus "Stopping Grails server"
@@ -187,6 +192,12 @@ class InteractiveMode {
                grailsServer = null
            }
         }
+    }
+
+    protected void exit() {
+        if (grailsServer) {
+            stopApp()
+        }
         else {
             goodbye()
         }