Playbooks fail with host_key_checking #387

ISSUE TYPE

Bug Report

COMPONENT NAME

SUMMARY

Running a template to execute a playbook fails with ssh unreachable because of strict key checking, I have set host_key_checking = False in ansible.cfg on both containers
On a standard Ansible installation not having to use an assortment of containers this option works as it is designed.

ENVIRONMENT

AWX version: Unsure, Cloned as of last week

AWX install method: Playbook with docker

Ansible version: 2.3.2

Operating System: RHEL6.9

Web Browser: Chrome

STEPS TO REPRODUCE

Standard installation, happens when running any playbook, as the containers have never connected to the hosts (host_key_checking disables the initial part of ssh'ing to a new box where it asks a yes/no question about adding to known_hosts file)

EXPECTED RESULTS

When using host_key_checking = False in the ansible.cfg file used it should skip the strict key checking, I've added it to both containers as it seems a bit vague as to which container is doing the actual connections

ACTUAL RESULTS

Playbook fails with SSH Unreachable

ADDITIONAL INFORMATION

http://docs.ansible.com/ansible/latest/intro_getting_started.html#host-key-checking