Add MySQL job to purge old GRA_*.log

[#74890134]
Allow services network name to be configurable
Remove outdated comment
Remove all references to storage_capacity_mb
Change default ib_log_file_size to original value to avoid breaking existing deployments
Refactor MySQL ctrl scripts for consistency

* Packaging includes compilation
* Executables have unique names for accurate pid finding (monit)

[#75989336]
"Background the galera-healthcheck process so the ctrl script can exit."
HAProxy serves its dashboard page

right now only accessible by ip/port
[#73913860]
Advertise route to haproxy dashboard
Copy across mysql_upgrade.sh from compilation vm and pass path to go
process.
Remove networks from template

They should be in stubs.  This was changed a while ago for runtime.
Along with philosophical problems, spiff merge logic is weird.

[#76020370]
Require haproxy_stats_password in the cf-mysql-template