The metastatic driver was ignoring the 3 standard pool configuration
options (max-servers, priority, and node-attributes) due to a missing
superclass method call. Correct that and update tests to validate.
Further, the node-attributes option was undocumented for the metastatic
driver, so add it to the docs.
Change-Id: I6a65ea5b8ddb319bc131f87e0793f3626379e15f
Co-Authored-By: Benedikt Loeffler <benedikt.loeffler@bmw.de>
7a1c75f918