Prepare InfluxDB for the golang sub repos rename

According to this thread https://groups.google.com/forum/#!msg/golang-nuts/eD8dh3T9yyA/l5Ail-xfMiAJ some of the sub repos of go are moving from `code.google.com/p/go.*` to `golang.org/x/*`. This pr is to have a patch ready to be merged in once the repos are actually moved