Enhance specs docker inspect (#377)
Enhance specs docker inspect (#377)

* Enhance specs docker inspect

 - The {DOCKER_CONTAINER_NAME} expansion isn't in the 1.x client. So it doesn't look like any of those docker rules have ever worked correctly on client systems. Use a pre_commands instead since they work with the 1.x client.

* Add item specs docker inspect

 - Delete uncessary content
 - Fix `root_crontab` error

RedHatInsights/insights-core,RedHatInsights/insights-core