consolidate root and non root installs

Rather than having a separate root and non root install i propose that we follow the model of the mariadb server where the install is performed as root using OS packages and then the product is run as a non root user (mysql). This will provide a simplified user experience as well as eliminate the need to support non root installs and the binary distributions. Any required system setup can be run as root as part of the package install but actual process execution is performed as a less privileged user that matches the user used by the mariadb server.

This is also a necessary step towards convergence.