Create bucket function does not allow user to set the bucket type

Create bucket function does not allow user to set the bucket type

We should add the bucket type to the list of parameters

it is possible to work around this with the rest interface like:
couchbase = Couchbase("127.0.0.1:8091", "Administrator", "password")
#get the rest interface
rest = couchbase._rest()
rest.create_bucket(bucket='myBucket',
ramQuotaMB=160,
authType='sasl',
saslPassword='password',
replicaNumber=0,
bucketType='couchbase')