PWX-38030: Don’t fail if node osdconfig doesn’t exist

[vivekpx]

What this PR does / why we need it:
Don’t fail if node osdconfig doesn’t exist

Which issue(s) this PR fixes (optional)
Closes # PWX-38030

Testing Notes

Node in Decommissioned state and cluster coordinator rebooted

root@vpatidar-99-3:~# pxctl status 
Status: PX is operational
Telemetry: Disabled or Unhealthy
Metering: Disabled or Unhealthy
License: Trial (expires in 31 days)
Node ID: 3c602ac3-b966-43d3-9669-98a749e8f0d4
	IP: 10.13.9.254 
 	Local Storage Pool: 1 pool
	POOL	IO_PRIORITY	RAID_LEVEL	USABLE	USED	STATUS	ZONE	REGION
	0	HIGH		raid0		111 GiB	34 MiB	Online	default	default
	Local Storage Devices: 1 device
	Device	Path		Media Type		Size		Last-Scan
	0:0	/dev/sdd	STORAGE_MEDIUM_SSD	128 GiB		11 Jul 24 12:17 UTC
	total			-			128 GiB
	Cache Devices:
	 * No cache devices
	Metadata Device: 
	1	/dev/sdc	STORAGE_MEDIUM_SSD	64 GiB
Cluster Summary
	Cluster ID: local-px-int
	Cluster UUID: 3933ff96-5d65-4533-9c68-4c882b220185
	Scheduler: kubernetes
	Total Nodes: 4 node(s) with storage (2 online)
	IP		ID					SchedulerNodeName	Auth		StorageNode	Used		Capacity	Status		StorageStatus	Version					Kernel			OS
	10.13.8.208	db0f3fff-8890-49c8-8b5b-50a818d13565	vpatidar-99-1		Disabled	Yes(PX-StoreV2)	0 B		0 B		Decommissioned	Down		3.2.0-dt-multitenancy-fc-91c4120	6.5.0-27-generic	Ubuntu 22.04.3 LTS
	10.13.10.6	c9ab9292-63c3-4506-8fac-2c7648c871b9	vpatidar-99-2		Disabled	Yes(PX-StoreV2)	34 MiB		111 GiB		Online		Up3.2.0-dt-multitenancy-fc-91c4120	6.5.0-27-generic	Ubuntu 22.04.3 LTS
	10.13.9.254	3c602ac3-b966-43d3-9669-98a749e8f0d4	vpatidar-99-3		Disabled	Yes(PX-StoreV2)	34 MiB		111 GiB		Online		Up (This node)	3.2.0-dt-multitenancy-fc-91c4120	6.5.0-27-generic	Ubuntu 22.04.3 LTS
	10.13.8.95	022d10ae-1839-43c2-82bd-4c1b5aceea9f	vpatidar-99-4		Disabled	Yes(PX-StoreV2)	Unavailable	Unavailable	Offline		Down		3.2.0-dt-multitenancy-fc-91c4120	6.5.0-27-generic	Ubuntu 22.04.3 LTS
Global Storage Pool
	Total Used    	:  102 MiB
	Total Capacity	:  333 GiB

Rebooted node came back up and Decommissioned node got cleaned up

root@vpatidar-99-3:~# pxctl status 
Status: PX is operational
Telemetry: Disabled or Unhealthy
Metering: Disabled or Unhealthy
License: Trial (expires in 31 days)
Node ID: 3c602ac3-b966-43d3-9669-98a749e8f0d4
	IP: 10.13.9.254 
 	Local Storage Pool: 1 pool
	POOL	IO_PRIORITY	RAID_LEVEL	USABLE	USED	STATUS	ZONE	REGION
	0	HIGH		raid0		111 GiB	34 MiB	Online	default	default
	Local Storage Devices: 1 device
	Device	Path		Media Type		Size		Last-Scan
	0:0	/dev/sdd	STORAGE_MEDIUM_SSD	128 GiB		11 Jul 24 12:17 UTC
	total			-			128 GiB
	Cache Devices:
	 * No cache devices
	Metadata Device: 
	1	/dev/sdc	STORAGE_MEDIUM_SSD	64 GiB
Cluster Summary
	Cluster ID: local-px-int
	Cluster UUID: 3933ff96-5d65-4533-9c68-4c882b220185
	Scheduler: kubernetes
	Total Nodes: 3 node(s) with storage (3 online)
	IP		ID					SchedulerNodeName	Auth		StorageNode	Used	Capacity	Status	StorageStatus	Version					Kernel			OS
	10.13.10.6	c9ab9292-63c3-4506-8fac-2c7648c871b9	vpatidar-99-2		Disabled	Yes(PX-StoreV2)	34 MiB	111 GiB		Online	Up		3.2.0-dt-multitenancy-fc-91c4120	6.5.0-27-generic	Ubuntu 22.04.3 LTS
	10.13.9.254	3c602ac3-b966-43d3-9669-98a749e8f0d4	vpatidar-99-3		Disabled	Yes(PX-StoreV2)	34 MiB	111 GiB		Online	Up (This node)	3.2.0-dt-multitenancy-fc-91c4120	6.5.0-27-generic	Ubuntu 22.04.3 LTS
	10.13.8.95	022d10ae-1839-43c2-82bd-4c1b5aceea9f	vpatidar-99-4		Disabled	Yes(PX-StoreV2)	34 MiB	111 GiB		Online	Up		3.2.0-dt-multitenancy-fc-91c4120	6.5.0-27-generic	Ubuntu 22.04.3 LTS
Global Storage Pool
	Total Used    	:  102 MiB
	Total Capacity	:  333 GiB

Special notes for your reviewer:
https://jenkins.pwx.dev.purestorage.com/job/Dev/job/Porx-05/550/

[github-actions]

This PR is stale because it has been in review for 3 days with no activity.