feat: Read PCIE AER counters class/net

Linux provides AER counters in the path /sys/class/net/<iface>/device/ This is split amoung 3 different files: aer_dev_correctable aer_dev_fatal aer_dev_nonfatal Signed-off-by: Diego Asturias <dasturias@arista.com>

Author: dasturiasArista

testdata/fixtures.ttar

@@ -5841,65 +5841,6 @@ Mode: 644
 Path: fixtures/sys/class/net/eth0/device
 SymlinkTo: ../../../devices/pci0000:00/0000:00:1f.6/
 # ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/sys/class/net/eth0/device/aer_dev_correctable
-Lines: 9
-RxErr 1
-BadTLP 2
-BadDLLP 3
-Rollover 4
-Timeout 5
-NonFatalErr 6
-CorrIntErr 7
-HeaderOF 8
-TOTAL_ERR_COR 9
-Mode: 444
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/sys/class/net/eth0/device/aer_dev_fatal
-Lines: 19
-Undefined 10
-DLP 11
-SDES 12
-TLP 13
-FCP 14
-CmpltTO 15
-CmpltAbrt 16
-UnxCmplt 17
-RxOF 18
-MalfTLP 19
-ECRC 20
-UnsupReq 21
-ACSViol 22
-UncorrIntErr 23
-BlockedTLP 24
-AtomicOpBlocked 25
-TLPBlockedErr 26
-PoisonTLPBlocked 27
-TOTAL_ERR_FATAL 28
-Mode: 444
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-Path: fixtures/sys/class/net/eth0/device/aer_dev_nonfatal
-Lines: 19
-Undefined 30
-DLP 31
-SDES 32
-TLP 33
-FCP 34
-CmpltTO 35
-CmpltAbrt 36
-UnxCmplt 37
-RxOF 38
-MalfTLP 39
-ECRC 40
-UnsupReq 41
-ACSViol 42
-UncorrIntErr 43
-BlockedTLP 44
-AtomicOpBlocked 45
-TLPBlockedErr 46
-PoisonTLPBlocked 47
-TOTAL_ERR_NONFATAL 48
-Mode: 444
-# ttar - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
 Path: fixtures/sys/class/net/eth0/dormant
 Lines: 1
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