test_fluvio_python.TestFluvioAdminTopic.test_admin_paritions should create a topic explictly

this test test the ability to access partition information, but a topic is needed to check

In ci, one is implicitly provided, but the test should set one up as a needed prereq.

Locate test_fluvio_python.TestFluvioAdminTopic.test_admin_paritions and run it to observe its current reliance on an implicitly provided topic. Update the test setup so the topic is created explicitly as a prerequisite, then confirm the test passes without that CI-provided topic.

索引モデルが issue の本文から書いたものです。