[WIP]: Feature/docker refactor

[stevendborrelli]

Hi, thank you for your contribution to Mantl! Before we can accept any code into
master, we need it to meet the following criteria. If there are any you can't
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• Installs cleanly on a fresh build of most recent master branch
• Upgrades cleanly from the most recent release
• Updates documentation relevant to the changes

This refactors the docker implementation:

• can either install docker inc rpms or the redhat package
• allows multiple docker options
• configurable logging backend (defaulting to journald)
• redo storage to use mantl-storage-setup, this removes a lot of the ansible code

[avnik]

Looks good on first glance.
Need some minor tweaking regarding storage setup, but I'll done it, when prepare my storage-setup branch to merge

[stevendborrelli]

Closing this, as we'll have a newer PR that includes updated storage.