Cli server version

[laurentiuNiculae]

What type of PR is this?

Which issue does this PR fix:

What does this PR do / Why do we need it:

If an issue # is not available please add repro steps and logs showing the issue:

Testing done on this change:

Automation added to e2e:

Will this break upgrades or downgrades?

Does this PR introduce any user-facing change?:

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov]

Codecov Report

Attention: 6 lines in your changes are missing coverage. Please review.

Comparison is base (0dfff56) 91.88% compared to head (8569fdb) 91.85%.

Files	Patch %	Lines
pkg/cli/client/server_info_cmd.go	95.23%	5 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1709      +/-   ##
==========================================
- Coverage   91.88%   91.85%   -0.04%     
==========================================
  Files         164      165       +1     
  Lines       27992    28125     +133     
==========================================
+ Hits        25721    25834     +113     
- Misses       1676     1692      +16     
- Partials      595      599       +4     

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[laurentiuNiculae]

Here are some examples of outputs

$ zli-linux-amd64 status --url http://127.0.0.1:5000 --user laur:password
Server Status: online
Server Version: bsd-0.0.4
Dist Spec Version: 1.1.0-dev
Built with: imagetrust, lint, metrics, mgmt, profile, scrub, search, sync, ui, userprefs

Bad Credentials:

$ zli-linux-amd64 status --url http://127.0.0.1:5000 --user laur:bad-pass
Server Status: unknown
Error: unauthorised access, given credentials are invalid

No Credentials:

$ zli-linux-amd64 status --url http://127.0.0.1:5000
Server Status: unknown
Error: unauthorised access, endpoint requires valid user credentials (add the flag '--user [user]:[password]')

MGMT is not enabled (minimal version):

$ zli-linux-amd64 status --url http://127.0.0.1:5000
Server Status: online
Error: /v2/_zot/ext/mgmt endpoint is not available

Server is offline:

$ zli-linux-amd64 status --url http://127.0.0.1:5000
Server Status: offline
Error: Get "http://127.0.0.1:8080/v2/": dial tcp 127.0.0.1:8080: connect: connection refused```
Given server isn't a OCI Registry:

Server is not Zot:

$ zli-linux-amd64 status --url http://127.0.0.1:8000
Server Status: offline
Error: registry at the given address doesn't implement the correct API: request at http://127.0.0.1:8000/v2/ failed