* Only environment variables starting with HOMEPAGE_VAR_ and HOMEPAGE_FILE_
are supported
* The value of env var HOMEPAGE_VAR_XXX will replace {{HOMEPAGE_VAR_XXX}}
in any config
* The value of env var HOMEPAGE_FILE_XXX must be a file path, the contents
of which will be used to replace {{HOMEPAGE_FILE_XXX}} in any config
* If a substituted value contains a variable reference it may also be
replaced, but the behavior is non-deterministic
External services define a kubernetes service pointing to an application
hosted outside of the cluster. These services should not attempt to get
the status based on kubernetes deployments. The new boolean flag disables
this functionality. Since this is an edge case, the default value is "false".
* Default for discovered services is 0
* Default weight for configured services is their index within their
group scaled by 100, i.e. (index + 1) * 100
* Should be backwards compatible with current loose ordering
* Total CPU and Memory usage for the entire cluster
* Total CPU and Memory usage for kubernetes pods
* Service discovery via annotations on ingress
* No storage stats yet
* No network stats yet
