RATIS-2222. Remove copy-rename-maven-plugin usage

[adoroszlai]

What changes were proposed in this pull request?

Build uses copy-rename-maven-plugin to overwrite original jar with shaded one in ratis-examples (and experiments). maven-shade-plugin can do that, so we can remove usage of copy-rename-maven-plugin.

<shadedArtifactAttached>
Defines whether the shaded artifact should be attached as classifier to the original artifact. If false, the shaded jar will be the main artifact of the project
(source)

https://issues.apache.org/jira/browse/RATIS-2222

How was this patch tested?

Built locally:

$ ./mvnw -Prelease -DskipTests -Dmaven.javadoc.skip clean verify
...
[INFO] --- shade:3.6.0:shade (default) @ ratis-examples ---
...
[INFO] Replacing original artifact with shaded artifact.
[INFO] Replacing ratis-examples/target/ratis-examples-3.2.0-SNAPSHOT.jar with ratis-examples/target/ratis-examples-3.2.0-SNAPSHOT-shaded.jar
...

Checked examples jar size:

$ ls -1sh ratis-examples/target/*SNAPSHOT.jar 
148K ratis-examples/target/original-ratis-examples-3.2.0-SNAPSHOT.jar
 21M ratis-examples/target/ratis-examples-3.2.0-SNAPSHOT.jar

$ tar tzvf ratis-assembly/target/ratis-assembly-3.2.0-SNAPSHOT-bin.tar.gz | grep ratis-examples             
-rw-r--r-- root/root  21222451 2023-11-19 15:23 apache-ratis-3.2.0-SNAPSHOT-bin/examples/lib/ratis-examples-3.2.0-SNAPSHOT.jar

Tested arithmetic example:

$ tar zxf ratis-assembly/target/ratis-assembly-3.2.0-SNAPSHOT-bin.tar.gz apache-ratis-3.2.0-SNAPSHOT-bin
$ cd apache-ratis-3.2.0-SNAPSHOT-bin

$ export PEERS="n0:127.0.0.1:6000,n1:127.0.0.1:6001,n2:127.0.0.1:6002"
$ export BIN=examples/bin

$ "${BIN}"/start-all.sh arithmetic server
Found examples/lib/ratis-examples-3.2.0-SNAPSHOT.jar
...
INFO  RaftServer$Division:379 - n0@group-6F7570313233: changes role from CANDIDATE to LEADER at term 1 for changeToLeader
...

$ "${BIN}"/client.sh arithmetic assign --name a --value 3 --peers "${PEERS}"
$ "${BIN}"/client.sh arithmetic assign --name b --value 4 --peers "${PEERS}"
$ "${BIN}"/client.sh arithmetic assign --name c --value "a+b" --peers "${PEERS}"
$ "${BIN}"/client.sh arithmetic get --name c --peers "${PEERS}"
...
c=7

[szetszwo]

+1 the change looks good.

[adoroszlai]

Thanks @szetszwo for the review.