feat: setup galera cluster member profile

- add eyaml support for role
- add /data volume for galera cluster members
- create profiles::selinux namespace for defining selinux configuration
  - create profiles::selinux::mysqld for managing specifics for mysqld
  - create profiles::selinux::setenforce to manage selinux mode
- parameterised options required in mysqld::server module
- add mariadb repo
- add additional facts for managing mysqld and galera

hieradata/common.yaml

@@ -29,6 +29,7 @@ profiles::packages::base:
   - vnstat
   - wget
   - zsh
+  - socat
 
 profiles::base::scripts::scripts:
   puppet: puppetwrapper.py