it is not useful in 1.18.18

In,1.18.18,deployment.yaml is not work and I suggest to take a change like this:
1.apiVersion change to apps/v1
2.add the code
`selector:
matchLabels:
app: rocketmq`
in the field 'spec'
3.because of the openjdk,you need to add `/usr/lib/jvm/jre-1.8.0-openjdk/lib/ext` in bin/tools.sh,like this:
`JAVA_OPT="${JAVA_OPT} -server -Xms1g -Xmx1g -Xmn256m -XX:MetaspaceSize=128m -XX:MaxMetaspaceSize=128m"
JAVA_OPT="${JAVA_OPT} -Djava.ext.dirs=${BASE_DIR}/lib:${JAVA_HOME}/jre/lib/ext:${JAVA_HOME}/lib/ext:/usr/lib/jvm/jre-1.8.0-openjdk/lib/ext"
JAVA_OPT="${JAVA_OPT} -cp ${CLASSPATH}"`

Maybe it is not serious to the hacker,but it spent me some day to fix it.So please fix in the document or the code