Implement usage of Vagrant images

[M0ses]

Tested so far:

• [x] Kanku::Handler::Vagrant
• [x] Kanku::Handler::ExecuteCommandViaSSH
• [x] Kanku::Handler::PrepareSSH
• [x] Kanku::Cli::ssh
• [x] Kanku::Handler::CopyProfile

To Check:

• [ ] Kanku/Cli/snapshot
• [ ] Kanku/Handler/GIT
• [ ] Kanku/Handler/K8NodePortForward
• [ ] Kanku/Handler/OBSServerFrontendTests

To test it in a kanku vm simply run

git clone https://github.com/M0ses/kanku.git
git -C kanku checkout fix_issue_59
export KANKU_CONFIG=kanku/KankuFile.examples/KankuFile.vagrant
kanku destroy
kanku up
kanku ssh -u vagrant

TODO

• [ ] set network_name to standard
• [ ] set ssh username to 'vagrant' (in KankuFile)
• [ ] _prepare_vm via ssh
• [ ] POC Vagrantfile parsing (provisioning)