Support for OL9 in 19c + prapatch in oraswdb_install

[Rendanic]

This is is big PR which adds support for OL9 to ansible-oracle.

It includes a lot of changes for that:

• example for beginner_patching uses collection from 4.x
• example for RAC does pre-Patching during oraswdb_install
  This shows the usage of the new feauture. It is not tested against a OL9 Vagrantbox yet..
• molecule dbfs-ol9
  The prapatch Installation could be tested with molecule against a OL9 docker image.
  Warning! The opatch in runInstaller checks for configured swap in OS. The dockerhost needs a resonable swap configuration for runInstaller execution. The assert for swap is not working in a container and disabled there. The internal check in opatch could not be disabled...
• molecule dbfs
  Needed some changes for dbfs-ol9.

Important!
You have to apply the patches during prepatch installation for 19c on OL9. You need a valid CSI to download the patches from https://support.oracle.com.
Do not use ZIP-Archives in db_homes_config with attribute path together. This is limited to environments with patch_before_rootsh: false.

The following variables are mandatory to enable the support:

apply_patches_db: true
patch_before_rootsh: true

This PR will solve the Issue #390 for missing OL9 support.

closes #390