Add constant for when Subreddit goes private.
Add constant for when Subreddit goes private.

When the Subreddit goes private, error messages appear while fetching.
The EXPECT_FAIL constant allows these to be ignored until it comes
back again.

fragglet/A858nalyze,fragglet/A858nalyze,pvrs12/A858nalyze,pvrs12/A858nalyze,pvrs12/A858nalyze,fragglet/A858nalyze