Remove kafka template from java-openliberty; Bump to 0.2.20 (#921)

Signed-off-by: Scott Kurz <skurz@us.ibm.com>

Author: scottkurz

incubator/java-openliberty/README.md

@@ -65,10 +65,6 @@ OpenAPI endpoints:
 
 The default template uses JUnit 5. You may be used to JUnit 4, but here are some great reasons to make the switch https://developer.ibm.com/dwblog/2017/top-five-reasons-to-use-junit-5-java/
 
-### Kafka template
-
-The kafka template allows you to develop applications that connect to Kafka using MicroProfile Reactive Messaging. For more information, see the [kafka readme](templates/kafka/README.md).
-
 ## Getting Started
 
 1. Create a new folder in your local directory and initialize it using the Appsody CLI, e.g.:

incubator/java-openliberty/stack.yaml

@@ -1,5 +1,5 @@
 name: Open Liberty
-version: 0.2.19
+version: 0.2.20
 description: Eclipse MicroProfile & Jakarta EE on Open Liberty & OpenJ9 using Maven
 license: Apache-2.0
 language: java