Add test for GetWorkspaceClient with SPOG host#712

hectorcast-db wants to merge 2 commits intomaindatabricks/databricks-sdk-java:mainfrom

hectorcast-db/stack/port-3-test-get-workspace-client-spogdatabricks/databricks-sdk-java:hectorcast-db/stack/port-3-test-get-workspace-client-spogCopy head branch name to clipboard