When the resource compression was disabled in the Omni config, we were not generating the ClusterMachineConfigPatches correctly.
The issue was: it was attempting to "force-compress" the ClusterMachineConfigPatches when any of the patches' size was above the threshold. But when it was trying to do that, it did not override the global setting of false.
The default setting for resource compression is `true`, but when a config file is used to configure Omni, and it was not specified in the config YAML, it was getting overwritten to be `false` due to the boolean merging behavior, which was fixed in https://github.com/siderolabs/omni/pull/2150.
Also: fix the compression kicking in even in cases when it is disabled in config but above the threshold.
Signed-off-by: Utku Ozdemir <utku.ozdemir@siderolabs.com>
Change `SetUncompressedData` methods to respect `compressionThresholdBytes` from
`internal/backend/runtime/omni/state_etcd.go` while we are at it.
Fix len(data) == 0 != nil bug.
Signed-off-by: Dmitriy Matrenichev <dmitry.matrenichev@siderolabs.com>
Co-authored-by: Utku Ozdemir <utku.ozdemir@siderolabs.com>
