Should filesystems size checks/expansions be in the ansible scripts?

[sxa]

Raised as a result of #568 (comment) since the AIX playbook DOES currently do filesystem adjustment (https://github.com/AdoptOpenJDK/openjdk-infrastructure/blob/ac1bce9f17ef5f0f5d736730d0ea0b8f302bffb3/ansible/playbooks/aix.yml#L34 which calls scripts in https://github.com/AdoptOpenJDK/openjdk-infrastructure/tree/ac1bce9f17ef5f0f5d736730d0ea0b8f302bffb3/ansible/playbooks/scripts)

[aixtools]

The AIX playbook scheme is much different than it was when this issue was opened. However, to try an discuss this from a viewpoint that could be valid for all platforms

• a filesystem check - in particular for where jenkins stores it's workspace and verify a minimum of space is available.
• this is needed for AIX as AIX rootvg is always partitioned, and /home is configured, during install, to the smallest size possible (1 PP, or 256MB - whichever is larger).
• AIX also needs assistance because /usr and/or /opt may not be large enough to permit successful installs of the OSS yum packages.
• Note: AIXpb: version02: cleanup stage 02 #2483 dynamically enlarges /usr, as needed, prior to downloading and installing a bootjdk version (the same can be done later for yum OSS and other non-AIX packages).