spec: mark course audit log specs as pending if unconfigured

Change-Id: Id0af82af4fc08d54372f7f2e164417228ffdd304
Reviewed-on: https://gerrit.instructure.com/29089
Reviewed-by: Nick Cloward <ncloward@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>
QA-Review: Brian Palmer <brianp@instructure.com>
Product-Review: Brian Palmer <brianp@instructure.com>