Update sample manifest.yml

Replace deprecated 'host' with 'routes'.
Update version of sample-app to 2.2.0.

Author: pc-jedi

sample/manifest.yml

@@ -4,9 +4,10 @@ applications:
 # You may want/need to change these to avoid naming conflicts
 #
 - name: logging-sample-app
-  host: logging-sample-app
   instances: 1
-  path: target/logging-sample-app-2.1.4.war
+  path: target/logging-sample-app-2.2.0.war
+  routes:
+  - route: logging-sample-app
   env:
     RANDOM_SLEEP: true
 # Set LOG_*: true to activate logging of respective field