Test get_blog_details() and the blog-details cache before, while, and after a blog exists.

see #WP23405


git-svn-id: https://unit-tests.svn.wordpress.org/trunk@1247 4a5a2adb-35eb-4268-9a1b-fe04a4134342
Add missing @ticket


git-svn-id: https://unit-tests.svn.wordpress.org/trunk@1248 4a5a2adb-35eb-4268-9a1b-fe04a4134342