Backport sys-kernel/coreos-modules: disable CONFIG_NFS_V4_2_READ_PLUS to stable #2765

Job	Run time
Check if we need to update the SDK	1s
Build an updated SDK container	0s
Build the OS image / Build Flatcar packages (amd64)	1h 23m 4s
Build the OS image / Build Flatcar packages (arm64)	1h 29m 19s
Build the OS image / Run kola tests / Run Kola tests (amd64)	1h 21m 43s
Build the OS image / Run kola tests / Run Kola tests (arm64)	1h 19m 52s
Build the OS image / Run kola tests / Merge TAP reports and post results	38s
	5h 34m 37s

Provide feedback