Dashboard does not display data for devices if they are renamed

[gregorskii]

Awesome plugin, thank you!

One small issue, the dashboard does not work properly if the devices are renamed from their mac address.

omada_device_cpu_percentage{device="Gateway",device_type="gateway",ip="10.10.10.1",mac="40-ED-00-6E-AA-E7",model="ER605",site="Cafe Rosalia",site_id="660e30ff0f212801b19ecd33",version="2.2.4"} 2
omada_device_cpu_percentage{device="Living Switch",device_type="switch",ip="10.10.10.23",mac="E4-FA-C4-B2-6E-27",model="SG2008",site="Cafe Rosalia",site_id="660e30ff0f212801b19ecd33",version="4.20.1"} 0
omada_device_cpu_percentage{device="Office Switch",device_type="switch",ip="10.10.10.24",mac="E4-FA-C4-B2-6E-01",model="SG2008",site="Cafe Rosalia",site_id="660e30ff0f212801b19ecd33",version="4.20.1"} 0
omada_device_cpu_percentage{device="Router Switch",device_type="switch",ip="10.10.10.45",mac="98-25-4A-63-F8-EF",model="SG2008P",site="Cafe Rosalia",site_id="660e30ff0f212801b19ecd33",version="3.20.1"} 1

I can likely work through this on the dashboard with more time but in case anyone runs across this it may be desired to fix it. Or update the dash with an alternate?