Add no-new-privileges to SecurityOptions returned by /info

[akerouanton]

- What I did

Add no-new-privileges to SecurityOptions returned by /info

Partially fixes #45311.

- How to verify it

$ docker info 2>/dev/null | grep -A 4 "Security Options"
Security Options:
 seccomp
  Profile: builtin
 cgroupns
 no-new-privileges

- Description for the changelog

• The API now indicates no-new-privileges is globally enabled.

[thaJeztah]

Looks like the docs on this field are a bit skimpy;
https://docs.docker.com/engine/api/v1.42/#tag/System/operation/SystemInfo

Perhaps some of that was intentional (to prevent only partially documenting things), I think we could improve it though, if we know what things can appear there (we probably can).

I'm good with keeping that for a follow-up, but I would suggest;

• Add this new option to the examples section for the field;

  moby/api/swagger.yaml

  Lines 5243 to 5259 in 3d0bdfa

  	SecurityOptions:
  	description: |
  	List of security features that are enabled on the daemon, such as
  	apparmor, seccomp, SELinux, user-namespaces (userns), and rootless.
  	Additional configuration options for each security feature may
  	be present, and are included as a comma-separated list of key/value
  	pairs.
  	type: "array"
  	items:
  	type: "string"
  	example:
  	- "name=apparmor"
  	- "name=seccomp,profile=default"
  	- "name=selinux"
  	- "name=userns"
  	- "name=rootless"

• I THINK for this one it's fine to not gate it by API version (as the list of items to expect is not a hard contract). That said, we could do so if we want to avoid users depending on the API to check if it's supported (and some servers with the same API version would return it, and others not) ❓ (any thoughts on that?)
• Add a mention in the API history. If we decide not to version it, then it's good to call that out in the change log (we do so for a couple other entries, which you can use as an example ("This change is not versioned, and affects all API versions if the daemon has this patch."))
  https://github.com/moby/moby/blob/master/docs/api/version-history.md

[thaJeztah]

LGTM, but left a comment about the function being exported 🙈

[thaJeztah]

LGTM, thanks!

[Frydzyslaw]

Super and working