Foreman » Installer

Fixes #23905 - Use /usr/share/foreman-proxy as ansible_dir

Using /etc/ansible means that the ~foreman-proxy/.ansible.cfg file we
had set up will be ignored. This means the callback is ignored and any
other options we might set in /etc/foreman-proxy/ansible.cfg

Configure ansible reporting callback

Match foreman-proxy user to RPM packaging

Listen on IPv6 on EL7

On Ruby 2.0 listening on * only listens on IPv4. Listening on :: listens
on both IPv4 and IPv6.

Original issue:

https://bugs.ruby-lang.org/issues/7100
https://github.com/ruby/ruby/commit/b1f493dcd1092fe17cccec998e175516ed5c6e47

Add dhcp options to allow overrides (#422)

Adding dhcp options to allow override of:
- pxefilename (defaults to pxelinux.0)
- network (of the dhcp server, defaults to undef)
- netmask (of the dhcp server, defaults to undef)

Fixes #22842 - Create .ansible.cfg in /etc/foreman-proxy

Fixes #22843 - host_key_checking should be False

Closes GH-416

Fixes #22862 - add async_ssh param

Fix the documentation for the infoblox DHCP plugin

Fixes #22845 - Install python-requests with Ansible

The callback needs this. It's already a very common package to have, but
if there's a clean installation of Foreman without Pulp, it will not be
there and the callback will not run until this dependency is installed.