Bucket Names to be escaped in N1QL

While using N1QL inside a Function, escape the bucket names with special characters.

That is, 

• if bucket name is 'beer-sample' , then use select * from `beer-sample` where type...
• if bucket name is 'beersample' , then use select * from beersample where type...

This is a N1QL expected behaviour to which we should link to: https://developer.couchbase.com/documentation/server/current/n1ql/n1ql-language-reference/identifiers.html