Salt multimaster proxy tool

[Mansi Seth]

I am tasked to build a tool that accepts a command for a set of minions in a multi-master setup, determine the correct salt master and execute it against specified minions. 

the proxy sits between the user and multiple salt master and their minions. The proxy in turn may reach out to multiple backends over http with some token (could be your backend which figures out where minions are connected, and actually executes salt calls / jobs) . Backend can be your API server. Frontend can stay API server to start with (which can then interact with all other backends)

Assume newbie knowledge of salt and python, and explain what exactly needs to be done here