fix(cli): do not throw error for osm version when no control plane found

[jaellio]

Description:

If a control plane is not installed in the specified namespace do
not throw an error for osm version. Currently, the command
returns an error in this scenario.

Resolves #4427

$ ./osm version
CLI Version: version.Info{Version:"dev", GitCommit:"d9426600787ac77a413fc97601ad6eef420f0e3c", BuildDate:""}
Mesh Version: No control plane found in namespace [osm-system]

$ echo $?
0

Signed-off-by: jaellio [email protected]

Testing done:

• updated unit tests
• manually verified output

Affected area:

Functional Area
New Functionality	[ ]
CI System	[ ]
CLI Tool	[x]
Certificate Management	[ ]
Control Plane	[ ]
Demo	[ ]
Documentation	[ ]
Egress	[ ]
Ingress	[ ]
Install	[ ]
Networking	[ ]
Observability	[ ]
Performance	[ ]
SMI Policy	[ ]
Security	[ ]
Sidecar Injection	[ ]
Tests	[ ]
Upgrade	[ ]
Other	[ ]

Please answer the following questions with yes/no.

1. Does this change contain code from or inspired by another project? no

   • Did you notify the maintainers and provide attribution?

2. Is this a breaking change? no

[codecov-commenter]

Codecov Report

Merging #4433 (2ffc0c7) into main (a70d654) will decrease coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main    #4433      +/-   ##
==========================================
- Coverage   69.22%   69.12%   -0.10%     
==========================================
  Files         212      212              
  Lines       14581    14580       -1     
==========================================
- Hits        10093    10078      -15     
- Misses       4436     4450      +14     
  Partials       52       52              

Flag	Coverage Δ
unittests	69.12% <100.00%> (-0.10%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
cmd/cli/version.go	46.51% <100.00%> (+1.93%)	⬆️
pkg/messaging/workqueue.go	89.28% <0.00%> (-10.72%)	⬇️
pkg/crdconversion/crdconversion.go	69.40% <0.00%> (-5.23%)	⬇️
pkg/ticker/ticker.go	83.33% <0.00%> (-3.85%)	⬇️
pkg/certificate/rotor/rotor.go	84.78% <0.00%> (-2.18%)	⬇️
pkg/injector/webhook.go	89.13% <0.00%> (-0.12%)	⬇️

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