[rel-2.2.0] bump cbsasl revision

Changes included: http://git.io/TL4npg

Change-Id: Ib242a25de66689373f9fd057e22f52a1970ba69a
Reviewed-on: http://review.couchbase.org/28454
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>