
Automatic merge from submit-queue AWS kube-up: fix MASTER_OS_DISTRIBUTION On AWS we were defining KUBE_MASTER_OS_DISTRIBUTION, but the scripts expect MASTER_OS_DISTRIBUTION. Fixes #29422
Automatic merge from submit-queue AWS kube-up: fix MASTER_OS_DISTRIBUTION On AWS we were defining KUBE_MASTER_OS_DISTRIBUTION, but the scripts expect MASTER_OS_DISTRIBUTION. Fixes #29422