Extend list for products supporting OPA

[maltesander]

Added missing products:

• Airflow
• HBase
• HDFS
• NiFi
• Superset

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[xeniape]

The ui submodule seems to be looking at an outdated version
Edit: I think you had to run git submodule update --remote

[maltesander]

The ui submodule seems to be looking at an outdated version Edit: I think you had to run git submodule update --remote

Thanks, done 0edfbc2.