Polish git configuration

[martin059]

Issue description

depends on:

• [x] #4

Modify the Ansible script so the login is automated as well if an ssh key is added to the user and allow a direct connection with this repo.

Take into account that the login credentials must be configurable by the user, as they are supposed to have their own Git/Github credentials.

Development task

• [x] Make it so the Ansible script, copies and sets the ssh keys that it finds in the ssh/ folder of the vagrant project
• [x] Add the necessary sections to Ansible's playbook for the vagrant to do this configuration.
• [x] Test it with ssh -T git@github.com and my user name should come up
• [x] Test doing a pull of this repo and pushing something to Github.

[martin059]

Result of configuration through Ansible:

[vagrant@at-pr-dc1 ~]$ ssh -T git@github.com
Hi martin059! You've successfully authenticated, but GitHub does not provide shell access.
[vagrant@at-pr-dc1 ~]$ git clone git@github.com:martin059/virtualization-level-2-vagrant-setup.git
Cloning into 'virtualization-level-2-vagrant-setup'...
remote: Enumerating objects: 44, done.
remote: Counting objects: 100% (44/44), done.
remote: Compressing objects: 100% (26/26), done.
remote: Total 44 (delta 12), reused 31 (delta 6), pack-reused 0
Receiving objects: 100% (44/44), 13.51 KiB | 13.51 MiB/s, done.
Resolving deltas: 100% (12/12), done.