WIP: Some patch ups for let the let the SRs can be build on a KVM with limited network accesing
- Include the public key of Boxiang to allow Slapos to download the packages from shacache. The packages were uploaded through another KVM, which uses Boxiang's configuration.
- Enable and customize the Goproxy, this can avoid using the default goproxy with a random IP allocated by the CDN. On the limited KVM, the specified goproxy link was pinned to a fixed IP address through the hosts file. This was done by using an ansible-playbook. (Change the default goproxy is because it using google service, I'm afraid allow it may also enable some other network accessing, so I choose a rarely used goproxy in Europe).
- Pin the version of the PyPI packages, eg:
testfixtures = 6.11.0
