net-mgmt/netdata: Update to the latest release (v1.13.0)
This netdata release fixes upstream Bugs:

• Bug #5670: "postgres: socket: update() unhandled exception"

It also includes features:

• Kubernetes: Helm chart
• Reduce memory usage

While here:
Add a CUPS option to enable/disable the plugin
Do cleanup on plist (new options added, fix permissions [FreeIPMI, etc])
Unbreak python plugins (shebangfix)
Make PID file configurable through rc script

For more info: https://github.com/netdata/netdata/releases/tag/v1.13.0

PR: 236258 235462
Reported by: Dries Michiels <driesm.michiels@gmail.com>, geraud@gcu.info
Sponsored by: The FreeBSD Foundation