Support Remote RRDCached for some applications

It seems some applications fail to display graphing data when using a remote rrdcached installation.

The following applications use the function get_arrays_with_application but that function grabs rrd file names from the local machine and not over rrdcached.

I can confirm docker, smart, mdadm do not display graph data in the webgui when using remote rrdcached instllation, so i’m assuming all of the following won’t either.

MDADM
DHCP-Stats
Docker
Certificate
Seafile
smart