bootstrap: don't maintain config for TYPE_CLUSTER

We don't need it, and it causes some other assumptions and tests to
fail. In reality this is a hack, but other than making an entirely new
codepath for admin connections, this is the best we can do right now

Change-Id: If5ddd5c9e034e3ddecc681a86d0f6e8a749099d1
Reviewed-on: http://review.couchbase.org/32911
Reviewed-by: Brett Lawson <brett19@gmail.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>