add JDK to centos & rhel docker images

The CentOS docker image of Nuxeo does not include the java compiler.

After building the image available at:
https://github.com/nuxeo/docker-nuxeo/blob/master/9.10/centos/Dockerfile

[nuxeo@7083a7b23159 server]$ javac -version
bash: javac: command not found

On Ubuntu, the JDK is installed with java-1.8.0-openjdk.

On CentOS, the name is misleading. Thus:

yum install -y java-1.8.0-openjdk

installs only a JRE.
And

yum install -y java-1.8.0-openjdk-devel

installs a JDK.

This should be updated to have the java compiler available on both platforms.