AWS script fix for EMR-7.0.0

[lachezar-n]

Following the pull request for updating the script to use emr-7.0.0, here is a fix to cover these issues:

• EMR uses by default Java 8 for Spark: Settings to enforce Java 11 were added
• Launching the cluster from outside the AWS client region was not configured originally: Here that is fixed for all shell scripts.

Successfully tested:

• Spin up the cluster, run DML script and terminate cluster from eu-centra-1 client into eu-central-1
• Spin up the cluster, run DML script and terminate cluster from eu-centra-1 client into us-central-1

[mboehm7]

LGTM - thanks for the patch @lachezar-n. I resolved the merge conflicts (in the future please do not include the previous PR), and we should keep an eye open if the hard-coded /usr/lib/jvm/jre-11 is always valid.