[Release 1.24] Revert "VPN integration"

[manuelbuil]

This reverts commit 19f86eb.

Proposed Changes

Revert VPN integration in 1.24 because it requires using the latest flannel and unfortunately, latest flannel will not work well with 1.24. Newest flannel requires kubeapi 1.25 to support the multi-cidr feature.

Types of Changes

Bugfix

Verification

Testing

Linked Issues

#7747

User-Facing Change

Further Comments

[codecov]

Codecov Report

Patch coverage: 19.23% and project coverage change: +0.09 🎉

Comparison is base (71a47fb) 10.00% compared to head (cf4bbc2) 10.09%.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-1.24    #7742      +/-   ##
================================================
+ Coverage         10.00%   10.09%   +0.09%     
================================================
  Files               151      149       -2     
  Lines             10863    10746     -117     
================================================
- Hits               1087     1085       -2     
+ Misses             9552     9437     -115     
  Partials            224      224              

Flag	Coverage Δ
unittests	10.09% <19.23%> (+0.09%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/agent/config/config.go	0.00% <ø> (ø)
pkg/agent/flannel/setup.go	0.00% <ø> (ø)
pkg/cli/agent/agent.go	0.00% <0.00%> (ø)
pkg/cli/cmds/agent.go	0.00% <ø> (ø)
pkg/cli/cmds/server.go	0.00% <ø> (ø)
pkg/cli/server/server.go	0.00% <0.00%> (ø)
pkg/cluster/encrypt.go	0.00% <0.00%> (ø)
pkg/daemons/config/types.go	67.21% <ø> (ø)
pkg/nodeconfig/nodeconfig.go	58.90% <ø> (-1.10%)	⬇️
pkg/passwd/passwd.go	60.81% <0.00%> (ø)
... and 3 more

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