add hardware metrics

[mwennrich]

Add hardware metrics

Depends on:

• Allow Powersupply reporting metal-api#578

# HELP metal_machine_hardware_info Provide information about the machine
# TYPE metal_machine_hardware_info gauge
metal_machine_hardware_info{biosVersion="3.4",bmcVersion="1.73",boardMfg="Supermicro",boardMfgSerial="",boardPartNumber="X11DPT-B",chassisPartNumber="CSE-217BHQ+-R2K22BP2",chassisPartSerial="C217BAH24AE0006",machineid="11111111-2222-3333-4444-aabbccddeeff",partition="fra-equ01",productManufacturer="Supermicro",productPartNumber="SYS-2029BT-HNR",productSerial="E262335X9100766D"} 1

# HELP metal_machine_ipmi_info Provide the ipmi ip address
# TYPE metal_machine_ipmi_info gauge
metal_machine_ipmi_info{ipmiIP="10.1.1.36:623",machineid="11111111-2222-3333-4444-aabbccddeeff"} 1

# HELP metal_machine_ipmi_power_state Provide information about the machine power state
# TYPE metal_machine_ipmi_power_state gauge
metal_machine_ipmi_power_state{machineid="11111111-2222-3333-4444-aabbccddeeff"} 1

# HELP metal_machine_ipmi_power_supplies_healthy Provide information about the number of healthy power supplies
# TYPE metal_machine_ipmi_power_supplies_healthy gauge
metal_machine_ipmi_power_supplies_healthy{machineid="11111111-2222-3333-4444-aabbccddeeff"} 2

# HELP metal_machine_ipmi_power_supplies_total Provide information about the total number of power supplies
# TYPE metal_machine_ipmi_power_supplies_total gauge
metal_machine_ipmi_power_supplies_total{machineid="11111111-2222-3333-4444-aabbccddeeff"} 2

# HELP metal_machine_ipmi_power_usage Provide information about the machine power usage in watts
# TYPE metal_machine_ipmi_power_usage gauge
metal_machine_ipmi_power_usage{machineid="11111111-2222-3333-4444-aabbccddeeff"} 69