updated P2 pattern to make sn optional

[aclaughan]

Description

Changed P2 regex to make sn field optional

Motivation and Context

show_inventory.py was only parsing lines that included a serial number

[LukasMcClelland]

Nice! I think that fixed the line endings. I also went ahead and removed trailing white space from the lines.

Please add a changelog (instructions are in this repos README)

[LukasMcClelland]

Also, it seems one of the unit tests is failing

2022-02-07T12:34:39: %AETEST-INFO: +------------------------------------------------------------------------------+
2022-02-07T12:34:39: %AETEST-INFO: |                      Starting section ShowInventoryRaw                       |
2022-02-07T12:34:39: %AETEST-INFO: +------------------------------------------------------------------------------+
2022-02-07T12:34:39: %AETEST-INFO: +..............................................................................+
2022-02-07T12:34:39: %AETEST-INFO: :                  Starting STEP 1: iosxe -> ShowInventoryRaw                  :
2022-02-07T12:34:39: %AETEST-INFO: +..............................................................................+
2022-02-07T12:34:39: %AETEST-INFO: +..............................................................................+
2022-02-07T12:34:39: %AETEST-INFO: :         Starting STEP 1.1: Test Golden -> iosxe -> ShowInventoryRaw          :
2022-02-07T12:34:39: %AETEST-INFO: +..............................................................................+
2022-02-07T12:34:39: %AETEST-INFO: +..............................................................................+
2022-02-07T12:34:39: %AETEST-INFO: :    Starting STEP 1.1.1: Gold -> iosxe -> ShowInventoryRaw -> golden_outpu    :
2022-02-07T12:34:39: %AETEST-INFO: :                                      t                                       :
2022-02-07T12:34:39: %AETEST-INFO: +..............................................................................+
2022-02-07T12:34:39: %SCRIPT-ERROR: Traceback (most recent call last):
2022-02-07T12:34:39: %SCRIPT-ERROR:   File "/ws/lumcclel-ott/unicon_dev/pypi/genie/src/genie/metaparser/_metaparser.py", line 292, in parse
2022-02-07T12:34:39: %SCRIPT-ERROR:     output = Schema(self.schema).validate(
2022-02-07T12:34:39: %SCRIPT-ERROR:   File "/ws/lumcclel-ott/unicon_dev/pypi/genie/src/genie/metaparser/util/schemaengine.py", line 284, in validate
2022-02-07T12:34:39: %SCRIPT-ERROR:     matchValue = Schema(sv, path).validate(
2022-02-07T12:34:39: %SCRIPT-ERROR:   File "/ws/lumcclel-ott/unicon_dev/pypi/genie/src/genie/metaparser/util/schemaengine.py", line 359, in validate
2022-02-07T12:34:39: %SCRIPT-ERROR:     matchValue = Schema(sv, path).validate(
2022-02-07T12:34:39: %SCRIPT-ERROR:   File "/ws/lumcclel-ott/unicon_dev/pypi/genie/src/genie/metaparser/util/schemaengine.py", line 359, in validate
2022-02-07T12:34:39: %SCRIPT-ERROR:     matchValue = Schema(sv, path).validate(
2022-02-07T12:34:39: %SCRIPT-ERROR:   File "/ws/lumcclel-ott/unicon_dev/pypi/genie/src/genie/metaparser/util/schemaengine.py", line 252, in validate
2022-02-07T12:34:39: %SCRIPT-ERROR:     raise SchemaTypeError(self.path, self.schema, data, command=command)
2022-02-07T12:34:39: %SCRIPT-ERROR: genie.metaparser.util.exceptions.SchemaTypeError: name.slot R0.sn: Expected type '<class 'str'>' but got type 'None'(<class 'NoneType'>)
2022-02-07T12:34:39: %SCRIPT-ERROR: 
2022-02-07T12:34:39: %SCRIPT-ERROR: The above exception was the direct cause of the following exception:
2022-02-07T12:34:39: %SCRIPT-ERROR: 
2022-02-07T12:34:39: %SCRIPT-ERROR: Traceback (most recent call last):
2022-02-07T12:34:39: %SCRIPT-ERROR:   File "/ws/lumcclel-ott/unicon_dev/pypi/external_genieparser/src/genie/libs/parser/utils/unittests.py", line 574, in test_golden
2022-02-07T12:34:39: %SCRIPT-ERROR:     parsed_output = obj.parse(**arguments)
2022-02-07T12:34:39: %SCRIPT-ERROR:   File "/ws/lumcclel-ott/unicon_dev/pypi/genie/src/genie/metaparser/_metaparser.py", line 315, in parse
2022-02-07T12:34:39: %SCRIPT-ERROR:     raise Exception("Parser {cls} schema checking failed".format(
2022-02-07T12:34:39: %SCRIPT-ERROR: Exception: Parser ShowInventoryRaw schema checking failed
Caught an assertion failure while executing STEP 1.1.1: Gold -> iosxe -> ShowInventoryRaw -> golden_output:
Traceback (most recent call last):
  File "/ws/lumcclel-ott/unicon_dev/pypi/external_genieparser/src/genie/libs/parser/utils/unittests.py", line 618, in test_golden
    raise AssertionError("Device output and expected output do not match")
AssertionError: Device output and expected output do not match

You can test your changes with the following command

python folder_parsing_job.py -o iosxe -c ShowInventoryRaw

from the genieparser/tests directory

[domachad]

@aclaughan Are you still working on this PR?