HELO version string seems incorrect

The SDK HELO version seems incorrect.

Steps to reproduce:

1. Spin up a one node cluster with the default bucket
2. Use the following Go code

   package main

   import (

   "fmt"

   "gopkg.in/couchbase/gocb.v1"

   )

   type User struct {

   Id string `json:"uid"`

   Email string `json:"email"`

   Interests []string `json:"interests"`

   }

   func main() {

   gocb.SetLogger(gocb.DefaultStdioLogger())

   cluster, _ := gocb.Connect("couchbase://localhost")

   bucket, _ := cluster.OpenBucket("default", "")

   bucket.Upsert("u:kingarthur",

   User{

   Id: "kingarthur",

   Email: "kingarthur@couchbase.com",

   Interests: []string{"Holy Grail", "African Swallows"},

   }, 0)

   var inUser User

   bucket.Get("u:kingarthur", &inUser)

   fmt.Printf("User: %v\n", inUser)

   }

3. build and execute
4. Tail the memcached.log:

   2017-11-10T18:26:58.200201Z NOTICE 43: HELO [gocb/v7.0.5] [ 10.111.163.1:64882 - 10.111.163.101:11207 ]

   2017-11-10T18:26:58.205011Z WARNING 43 Closing connection [ 10.111.163.1:64882 - 10.111.163.101:11207 ] due to read error: Connection reset by peer

As you can see the HELO version of the SDK is gocb/v7.0.5 I was expecting 1.30, as I believe that is the SDK version being used.