cleanup(kumactl): remove old flags in install tp

[lahabana]

• hide ebpf flags until we properly announce it
• deprecate --kuma-cp-ip and --skip-resolv-conf, these
  were left overs from a time where cp would run a DNS server
  this is not the case anymore and embedded DNS works much better

Ref #4759

Signed-off-by: Charly Molter charly.molter@konghq.com

Checklist prior to review

• Link to docs PR or issue -- Need to clean reference to the flags
• Link to UI issue or PR -- NA
• Is the issue worked on linked? --
• Unit Tests -- Updated golden files
• E2E Tests -- NA
• Manual Universal Tests -- NA
• Manual Kubernetes Tests -- NA
• Do you need to update UPGRADE.md? -- No
• Does it need to be backported according to the backporting policy? -- No

[lahabana]

@bartsmykla the cleanup we've talked about

[codecov-commenter]

Codecov Report

Merging #4760 (493681a) into master (c3cf155) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #4760      +/-   ##
==========================================
+ Coverage   46.49%   46.50%   +0.01%     
==========================================
  Files         689      689              
  Lines       46790    46765      -25     
==========================================
- Hits        21753    21750       -3     
+ Misses      23110    23093      -17     
+ Partials     1927     1922       -5     

Impacted Files	Coverage Δ
pkg/transparentproxy/kubernetes/kubernetes.go	82.47% <ø> (ø)
...p/kumactl/cmd/install/install_transparent_proxy.go	79.88% <100.00%> (+6.01%)	⬆️
pkg/core/resources/manager/cache.go	88.31% <0.00%> (+2.59%)	⬆️
pkg/xds/cache/once/once.go	100.00% <0.00%> (+5.00%)	⬆️
pkg/xds/cache/once/cache.go	87.17% <0.00%> (+5.12%)	⬆️

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