go_1_10: 1.10 -> 1.10.1

This updates go to the latest version of the golang 1.10 branch.
A few minor (but important) things are fixed in this version:

* CVE-2018-7187 - arbitrary code execution in `go get` (when used with
  --insecure) [1]
* Extended Key Usage verification in client certificate scenarios [3]
* a bunch of stability changes

The full list of changes can se been on GitHub [2] & [4].

[1] https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7187
[2] https://github.com/golang/go/issues?q=milestone%3AGo1.10.1
[3] https://github.com/golang/go/issues/23884
[4] https://github.com/golang/go/issues/24563