Role for disconnected git server

[sabre1041]

What does this PR do?

Support for a git server to host OpenShift example content in a disconnected environment

How should this be manually tested?

• Create a new server instance
• Create an inventory file in the inventory folder with the following content with the name disconnected-git

[disconnected-git]
<server_ip>

• Create a playbook at the root of the rhc-ose-ansible folder to test with the following content

- hosts: disconnected-git
  roles:
    - disconnected-git

• Run the playbook

ansible-playbook -i inventory/disconnected-git disconnected-git.yml

• Once the ansible run completed successfully, clone one of the OpenShift examples

git clone http://<server_ip>/git/openshift/openshift-quickstarts.git

Is there a relevant Issue open for this?

N/A

Who would you like to review this?

/cc @etsauer @oybed @JayKayy

[JayKayy]

Tested and ran successfully after adding libsemanage-python to list of installed packages.

[sabre1041]

@JayKayy made suggested additions

[JayKayy]

Looks good to me.

[sabre1041]

@etsauer added example inventory file that provides an example of providing custom SSH keys to add for secure SSH style git access