Make rack session store adapter quiet
Make rack session store adapter quiet

Change-Id: I696e0872413b08a91589d58c1a7684e5ff3dfe96
Reviewed-on: http://review.couchbase.org/22370
Tested-by: Sergey Avseyev <87f6d5e4fd3644c3c20800cde7fd3ad1569370b3@gmail.com>
Reviewed-by: Sergey Gaychuk <101dcc9f31f55f019fad2b656aeed6325cff4dbc@gmail.com>
Reviewed-by: Matt Ingenthron <1fa2ef4755a9226cb9a0a4840bd89b158ac71391@couchbase.com>

dewolfe/couchbase-ruby-client,dewolfe/couchbase-ruby-client