Remove invalid character '_' from task name label
Remove invalid character '_' from task name label

https://kubernetes.io/docs/concepts/overview/working-with-objects/names/#names

Signed-off-by: mkosiarc <d5a93e58ea7806b66f74a8f8a547019e3f92606f@redhat.com>

fr34k8/atomic-reactor,projectatomic/atomic-reactor,projectatomic/atomic-reactor,fr34k8/atomic-reactor