Minor bugfix

New Oracle OEL 7 Linux don't have the development repositories installed. Due to this docker-compose, pwgen and other tools are missing. This minor release update does enhance the bootstrap configuration to enable the repository and install the missing tools.

yum-config-manager --enable ol7_developer --enable ol7_developer_EPEL
yum install -y mosh tmux pwgen fail2ban docker-engine docker-compose