The *vmutils* package can be built from source easily, as its just a
collection of Go applications. Grafana and Alertmanager are quite a bit
more complicated because of their respective browser applications. In
the interest of getting this project actually going, we'll just install
the official binary releases of these (for now?).
Victoria Metrics is not available by default with Buildroot, but adding
a package description for it is very straightforward. The flags and
tags are specified within Victoria Metrics's own Makefile.
