Add ability to configure docker daemon

[navidshaikh]

Related

• docker daemon configuration adb-atomic-developer-bundle#266
• Dedicated script should be called on the ADB/CDK VM to generate the TLS certificates vagrant-service-manager#106

We need the ability to switch the configuration of docker daemon to run on

1. unix socket
2. unix and TCP socket

The implementation should reside in the box so that external tooling can call the script to toggle between the docker daemon configuration.

is having this implementation as part of sccli a good option?

[bexelbie]

+1 for this being in adb-utils, whether in sccli or in a script sccli knows how to call.

[bexelbie]

Adding more details from a new round of discussion:

Breakout docker as a proper service to be managed

• Add configuration reporting to allow for fixes for
  • DOCKER_TLS_VERIFY always set: DOCKER_TLS_VERIFY is always set vagrant-service-manager#17
  • Don't report cert info if disabled: Don't report cert information when it is disabled vagrant-service-manager#19
• Add cert generation to allow for fixes for
  • Calling a script to generate new certificates: Dedicated script should be called on the ADB/CDK VM to generate the TLS certificates vagrant-service-manager#106
• Do startup configuration allowing us to
  • consider moving lines 132-136 out of https://github.com/projectatomic/adb-atomic-developer-bundle/blob/master/build_tools/kickstarts/centos-7-adb-vagrant.ks and into a service startup with sccli
  • More cleanly define the startup of the box (TCP vs socket) and cert generation
    • docker daemon configuration adb-atomic-developer-bundle#266
    • Re-configure docker daemon to run on TCP  vagrant-service-manager#82