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Fix package aliases to follow golang convention
Some package aliases are not not align with golang convention https://blog.golang.org/package-names. This PR fixes them. Also adds a verify script and presubmit checks.
Fixes#35070.
cc/ @timstclair @Random-Liu
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Revision handling in federated deployment controller
Deployment controller in regular kubernetes automatically adds an annotation in deployment. This causes a bit of confusion in controller and tests. This PR skips revision annotation in checks. In the next K8S release we will need to have better support for deployment revisions.
Helps with #36588
cc: @nikhiljindal @madhusudancs
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Make desired objects in fed controller reconcilation function fully writable
When creating desired objects for sub-cluster in reconciliate functions we don't make full copies. This may result in unexpected race condition in the future when someone actually adds some object modifications (not needed in most cases but anyway - the cost of extra copy will be relatively small comparing to inter-cluster traffic). In case of ReplicaSet and Deployment the spec copy was a shallow one - ok for setting just replicas but also error-prone in the future.
cc: @quinton-hoole @nikhiljindal @madhusudancs
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Checking function integrated with get from chanel in fed tests
Current federation controller tests assume that each actions results in only one etcd action. However, due to various timing issues, this may not necessary the truth and multiple updates can be generated. Thus tests should try to get all available messages from the debug channels instead failing on the first message, which may come from the previous test scenario.
Applied to deployment tests. Other tests will be updated in the following PR(s).
cc: @quinton-hoole @wojtek-t
