[PYTHON] Dynamically set env.hosts in fabric

Create the following function object in fabfile.py

fabfile.py


env.hosts = ['127.0.0.1']

def local():
    env.hosts = ['127.0.0.1']

def all():
    env.hosts = ['aaa.example.com','bbb.example.com',...]

def deploy():
    #processing

At the time of calling

call


% #Localhost only
% fab local deploy
%
% #Multiple hosts
% fab all deploy

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