Remove obsolete management components

[imikushin]

Remove obsolete management components when upgrading the management cluster. Currently, it's the old tkr-controller-manager deployment in the tkr-system namespace.

Signed-off-by: Ivan Mikushin imikushin@vmware.com

What this PR does / why we need it

Which issue(s) this PR fixes

Fixes #3887

Describe testing done for PR

Added a unit test.

Release note

When upgrading the management cluster to new TKG version, obsolete management components (currently, the tkr-controller-manager deployment in the tkr-system namespace) will be deleted prior to installing the new management packages.

Additional information

Special notes for your reviewer

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3900/20221111033119/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[codecov]

Codecov Report

Merging #3900 (9ff465b) into main (7f8c8f7) will decrease coverage by 0.92%.
The diff coverage is 38.15%.

❗ Current head 9ff465b differs from pull request most recent head 5e66f67. Consider uploading reports for the commit 5e66f67 to get more accurate results

@@            Coverage Diff             @@
##             main    #3900      +/-   ##
==========================================
- Coverage   46.95%   46.03%   -0.93%     
==========================================
  Files         403      427      +24     
  Lines       40314    41836    +1522     
==========================================
+ Hits        18929    19258     +329     
- Misses      19628    20805    +1177     
- Partials     1757     1773      +16     

Impacted Files	Coverage Δ
tkg/client/delete_region.go	0.00% <0.00%> (ø)
tkg/client/init.go	0.00% <0.00%> (ø)
tkg/client/upgrade_region.go	24.93% <0.00%> (-0.26%)	⬇️
...nagementcomponents/management_component_install.go	76.69% <0.00%> (+2.23%)	⬆️
tkg/client/management_components.go	21.59% <63.04%> (+9.62%)	⬆️
tkg/managementcomponents/helper.go	94.11% <0.00%> (-0.85%)	⬇️
tkg/tkgconfigbom/bom_types.go	0.00% <0.00%> (ø)
tkg/client/cleanup_core_repo.go
cmd/cli/plugin/cluster/upgrade.go	58.50% <0.00%> (ø)
... and 30 more

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[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3900/20221115020941/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[github-actions]

Cluster Generation A/B Results:
https://storage.googleapis.com/tkg-clustergen/3900/20221116193239/clustergen.diff.txt
Author/reviewers:
Please review to verify that the effects on the generated cluster configurations are exactly what the PR intended, and give a thumbs-up if so.

[prkalle]

LGTM. Thanks

[tenczar]

LGTM

[wjun]

LGTM