Set the deploy key for GIT clone projects

[sebas5384]

This is just a suggestion, just to have a clue of whats expected:

# OS staff: Setting Deploy key.
if is_project_from_git && [[ ! -z $DEPLOY_KEY ]]; then

  juju-log "Write the deploy ssh key."
  echo "$DEPLOY_KEY" > /home/ubuntu/.ssh/deploy_key
  chown ubuntu:ubuntu /home/ubuntu/.ssh/deploy_key
  chmod 400 /home/ubuntu/.ssh/deploy_key

  if [[ ! -f /usr/bin/git-wrapped ]]; then
    wget https://raw2.github.com/sebas5384/utils/master/bin/git.sh
    mv git.sh /usr/bin/git-wrapped
    chmod +x /usr/bin/git-wrapped
  fi

elif [[ -f /home/ubuntu/.ssh/deploy_key ]]; then
  juju-log "Removing ssh deploy key."
  rm /home/ubuntu/.ssh/deploy_key
fi