Fix Default Java Home in apachebookkeeper/bookkeeper-current image (#2476)
### Motivation
You can easily build locally a docker image regarding the "current" version, that is the code that you have currently on your git repository using these commands:
```
mvn clean install -DskipTests
mvn install -f tests/docker-images/current-version-image/pom.xml -DintegrationTests
```
```
# start ZooKeeper server locally
docker run --network=host zookeeper:latest
```
```
# start one Bookie
docker run --network=host --env BK_zkServers=localhost:2181 --env BK_bookieId=bk1 --env BK_allowLoopback=true --env BK_bookiePort=3181 apachebookkeeper/bookkeeper-current
```
but in current master, after the first switch to JDK11 the Dockerfile of the "apachebookkeeper/bookkeeper-current" is broken and points to a broken path for the JAVA_HOME env entry.
### Changes
Change the default JAVA_HOME to the good path
Co-authored-by: Enrico Olivelli <eolivelli@apache.org>
diff --git a/tests/docker-images/current-version-image/Dockerfile b/tests/docker-images/current-version-image/Dockerfile
index 0eabe77..ed0a890 100644
--- a/tests/docker-images/current-version-image/Dockerfile
+++ b/tests/docker-images/current-version-image/Dockerfile
@@ -30,7 +30,7 @@
EXPOSE ${BOOKIE_PORT} ${BOOKIE_HTTP_PORT} ${BOOKIE_GRPC_PORT}
ENV BK_USER=bookkeeper
ENV BK_HOME=/opt/bookkeeper
-ENV JAVA_HOME=/usr/lib/jvm/jdk-11
+ENV JAVA_HOME=/usr/lib/jvm/java-11
# prepare utils
RUN set -x \
