feat(kuma-dp) Add conf to disable service vip

[lahabana]

Add a switch to make <kuma.io/service>.mesh generation optional.

Motivation:

• It is only useful in a restricted set of cases (mix universal/k8s, universal only...).
• It generates a lot of configuration (1 listener per service, entries in the dns filter...)
• VirtualOutbound can do all this and more

This adds a switch to turn the generation of these off.
In future versions we should remove it altogether and suggest generating specific virtual-outbound instead.

Documentation

• Link to the website documentation PR

Testing

• Unit tests
• E2E tests
• Manual testing on Universal
• Manual testing on Kubernetes

Backwards compatibility

• Add backport-to-stable label if the code is backwards compatible. Otherwise, list breaking changes.

[codecov-commenter]

Codecov Report

Merging #3143 (ef62ee0) into master (1c8405d) will decrease coverage by 0.07%.
The diff coverage is 30.64%.

@@            Coverage Diff             @@
##           master    #3143      +/-   ##
==========================================
- Coverage   52.37%   52.30%   -0.08%     
==========================================
  Files         923      923              
  Lines       53596    53643      +47     
==========================================
- Hits        28072    28059      -13     
- Misses      23291    23347      +56     
- Partials     2233     2237       +4     

Impacted Files	Coverage Δ
pkg/plugins/runtime/k8s/plugin.go	1.12% <0.00%> (-0.01%)	⬇️
test/e2e/virtualoutbound/virtualoutbound_k8s.go	0.00% <0.00%> (ø)
pkg/config/dns-server/config.go	71.42% <100.00%> (+2.19%)	⬆️
pkg/dns/vips_allocator.go	74.50% <100.00%> (+0.50%)	⬆️
pkg/plugins/runtime/universal/plugin.go	68.42% <100.00%> (+1.75%)	⬆️
pkg/xds/cache/once/cache.go	87.17% <0.00%> (-7.70%)	⬇️
pkg/core/resources/manager/cache.go	83.11% <0.00%> (-5.20%)	⬇️
pkg/api-server/server.go	82.09% <0.00%> (-3.06%)	⬇️
pkg/kds/client/sink.go	59.45% <0.00%> (-2.71%)	⬇️
pkg/mads/v1/client/client.go	41.25% <0.00%> (-2.50%)	⬇️
... and 2 more

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[bartsmykla]

lgtm