Merge 70736516-groovy-2.3 to master

[Completes #70736516]

Author: nebhale

config/groovy.yml

@@ -15,5 +15,5 @@
 
 # Configuration for the Groovy container
 ---
-version: 2.2.+
+version: 2.3.+
 repository_root: "{default.repository.root}/groovy"