Fix initial bool value to avoid sending update to kubelet every 5 seconds

[pmtk]

ListAndWatch() uses return value of refreshDevices() to make a decision regarding sending the updated devices to kubelet.

Boolean default value is false, therefore variable equal is always false and refreshDevices() always returns false. This causes ListAndWatch() to always send updates to kubelets which causes flood of logs:

kubelet I0710 17:43:44.599983  286051 client.go:93] "State pushed for device plugin" resource="device.microshift.io/zigbee" resourceCapacity=1
kubelet I0710 17:43:44.605881  286051 manager.go:322] "Processed device updates for resource" resourceName="device.microshift.io/zigbee" totalCount=1 healthyCount=1
kubelet I0710 17:43:49.601009  286051 client.go:93] "State pushed for device plugin" resource="device.microshift.io/zigbee" resourceCapacity=1
kubelet I0710 17:43:49.605114  286051 manager.go:322] "Processed device updates for resource" resourceName="device.microshift.io/zigbee" totalCount=1 healthyCount=1
kubelet I0710 17:43:54.601267  286051 client.go:93] "State pushed for device plugin" resource="device.microshift.io/zigbee" resourceCapacity=1
kubelet I0710 17:43:54.613636  286051 manager.go:322] "Processed device updates for resource" resourceName="device.microshift.io/zigbee" totalCount=1 healthyCount=1

[pmtk]

Hey @squat
First of all - thanks for developing this project :)
We actually included it with MicroShift (as a code import, not a DaemonSet), hence you can see that the domain is different from default one: device.microshift.io.
This log flood is something we discovered during testing.

Thanks
Patryk

[squat]

Oh great catch @pmtk

[duckfullstop]

No idea why Github included me on this PR, but have a LGTM from me regardless 👍

[squat]

Hehehe sorry @duckfullstop I accidentally mentioned you rather than the author. Thank you for your service