[pcied] daemon is in FATAL state when system starts

[DavidZagury]

Description

The pcied damon does not start.
It crashes when trying to start it and enters FATAL state.

Steps to reproduce the issue:

1. Load switch
2. Enter pmon contianer
3. Check pcied status

Describe the results you received:

Pcied daemon crashes when trying to start it.

Describe the results you expected:

Pcied daemon should load.

Output of show version:

Image based 5c503b8

Output of show techsupport:

(paste your output here or download and attach the file here )

Additional information you deem important (e.g. issue happens only occasionally):

On the log we can see:

Jun 27 12:24:04.281007 r-leopard-41 INFO pmon#/supervisord: pcied File "/usr/local/bin/pcied", line 48, in load_platform_pcieutil
Jun 27 12:24:04.281070 r-leopard-41 INFO pmon#/supervisord: pcied self.log_error("Failed to load platform Pcie module. Error : {}".format(str(e)), True)
Jun 27 12:24:04.281070 r-leopard-41 INFO pmon#/supervisord: pcied NameError: name 'self' is not defined
Jun 27 12:24:04.288837 r-leopard-41 INFO pmon#/supervisord: pcied Exception ignored in: <function DaemonPcied.del at 0x7fb1817b9488>
Jun 27 12:24:04.288837 r-leopard-41 INFO pmon#/supervisord: pcied Traceback (most recent call last):
Jun 27 12:24:04.288837 r-leopard-41 INFO pmon#/supervisord: pcied File "/usr/local/bin/pcied", line 100, in del
Jun 27 12:24:04.288837 r-leopard-41 INFO pmon#/supervisord: pcied if self.status_table:
Jun 27 12:24:04.288837 r-leopard-41 INFO pmon#/supervisord: pcied AttributeError: 'DaemonPcied' object has no attribute 'status_table'

It started after the merge of sonic-net/sonic-platform-daemons#189
This PR added in the function load_platform_pcieutil on file src/sonic-platform-daemons/sonic-pcied/scripts/pcied a call to self.log_error which is not defined in this scoop.

The lines:
https://github.com/Azure/sonic-platform-daemons/blob/2d2749ab77ea0cfb9b1a9a0a5c7eeffbde9daed8/sonic-pcied/scripts/pcied#L48
https://github.com/Azure/sonic-platform-daemons/blob/2d2749ab77ea0cfb9b1a9a0a5c7eeffbde9daed8/sonic-pcied/scripts/pcied#L53

[liat-grozovik]

@sujinmkang could you please take a look? this is a result of recent changes in master I believe. Lets not take into 202012 until it is clear we have stable changes in master.