fix bug

[robotneo]

An error has occurred while serving metrics:

8 error(s) occurred:

• [from Gatherer No Issue #2] collected metric "redfish_system_pcie_device_state" { label:<name:"hostname" value:"localhost" > label:<name:"pcie_device" value:"C620 Series Chipset Family PCI Express Root Port deps rule missing from Makefile #5" > label:<name:"pcie_device_id" value:"0-28" > label:<name:"pcie_device_partnumber" value:"" > label:<name:"pcie_device_type" value:"MultiFunction" > label:<name:"pcie_serial_number" value:"" > label:<name:"resource" value:"pcie_device" > gauge:<value:1 > } was collected before with the same name and label values