MB-10922 Don't use linux binaries on SunOS

Change-Id: Ide70ad7546d9824de4a28760f9160f3a8e7a2877
Reviewed-on: http://review.couchbase.org/36202
Tested-by: Trond Norbye <trond.norbye@gmail.com>
Reviewed-by: Chris Hillery <ceej@couchbase.com>