openshift_terraform RHSM error handling

[jvanmeter]

The registration logic needs to be enhanced to provide better handling of different error conditions. For example this error is ignored when it should error, because this activation key did not have a subscription attached.

TASK [openshift.prereq : Register host via Activation key] ***********************************
fatal: [node.0.dca-ocp101.redhatgov.io]: FAILED! => {"changed": false, "cmd": "/sbin/subscription-manager register --org 11294799 --activationkey VALUE_SPECIFIED_IN_NO_LOG_PARAMETER", "msg": "None of the subscriptions on the activation key were available for attaching.", "rc": 70, "stderr": "None of the subscriptions on the activation key were available for attaching.\n", "stderr_lines": ["None of the subscriptions on the activation key were available for attaching."], "stdout": "", "stdout_lines": []}
...ignoring