Description of problem:

When specifying a proxy with katello-configure, it correctly sets a proxy for yum_importer.json but no proxy configuration is saved for puppet. Thus preventing importing puppeforge when running behind a proxy.


Version-Release number of selected component (if applicable):
Satellite 6.0.2 (MDP2), but also found in in latest upstream in Katello Git repo

How reproducible:
katello-configure --proxy-url=http://some.http.proxy --proxy-port=8080
/etc/pulp/server/plugins.conf.d/puppet_importer.json does not exist and sync with puppetforge fails


Steps to Reproduce:
1. katello-configure --proxy-url=http://some.http.proxy --proxy-port=8080
2. Run puppetforge repo sync
3. After a period, nectar will timeout and sync will fail

Actual results:
Puppet repo sync failure

Expected results:
Puppet Forge modules to be synced