fuzz: fuzz connman with non-empty addrman + ASMap

[brunoerg]

Motivation

Currently, we fuzz connman with an addrman from NodeContext. However,
fuzzing connman with only empty addrman might not be effective, especially
for functions like GetAddresses and other ones that plays with addrman. Also,
we do not fuzz connman with ASMap, what would be good for functions that need
GetGroup, or even for addrman. Without it, I do not see how effective would be
fuzzing ASMapHealthCheck, for example.

Changes

• Move AddrManDeterministic and ConsumeNetGroupManager to util.
• Use ConsumeNetGroupManager in connman target to construct a netgroupmanager
  and use it for ConnmanTestMsg.
• Use AddrManDeterministic in connman target to create an addrman. It does
  not slow down as "filling" the addrman (e.g. with FillAddrman).
• Add coverage for ASMapHealthCheck.

[DrahtBot]

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Conflicts

Reviewers, this pull request conflicts with the following ones:

• #28584 (Fuzz: extend CConnman tests by vasild)

If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.