Don't modify the docker unit file

[Tim Van Steenburgh]

Opened by g-ramirez on 2018-09-25 17:23:05+00:00 at https://github.com/juju-solutions/layer-canal/issues/20

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Hello,
It appears the canal charm overwrites the proxy settings from the principal units on the docker daemon.
Steps to reproduce:
juju deploy etcd
juju deploy kubernetes-master
juju deploy kubernetes-worker
juju config kubernetes-worker no_proxy= http_proxy= https_proxy=
juju deploy canal
juju add-relation canal etcd
juju add-relation canal kubernetes-master
juju add-relation canal kubernetes-worker
The below logic is already handled by the principal charm, so having it on the subordinate will overwrite its settings:
@when_any('config.changed.http_proxy', 'config.changed.https_proxy',
'config.changed.no_proxy')
@when('docker.ready')
def proxy_changed():
'''The proxy information has changed, render templates and restart the
docker daemon.'''
recycle_daemon()
https://api.jujucharms.com/charmstore/v5/~containers/canal/archive/reactive/docker.py
https://api.jujucharms.com/charmstore/v5/~containers/kubernetes-worker/archive/reactive/docker.py
Thanks,
Gabe