ansible: fix existing Java detection edge case (#4295)

Add additional check for whether an existing `java` ran successfully
as the original check could erroneously match if the Java version
being checked for was in an error message (e.g. part of the directory
name included in the message).

Author: richardlau

ansible/roles/java-base/tasks/main.yml

@@ -50,7 +50,7 @@
 # If we're already using the latest there is no need to do anything.
 - name: check existing adoptopenjdk version is up to date
   set_fact:
-    update_adoptopenjdk: "{{ adoptopenjdk_metadata.json[0].version_data.openjdk_version not in java.stdout }}"
+    update_adoptopenjdk: "{{ java.rc != 0 or adoptopenjdk_metadata.json[0].version_data.openjdk_version not in java.stdout }}"
   when: use_adoptopenjdk == True
 
 - name: create cache directory for adoptopenjdk binaries