bumped k8s version - v1.7.4

Author: yagonobre

Makefile

@@ -32,7 +32,7 @@ export AWS_EC2_KEY_PATH     := ${DIR_KEY_PAIR}/${AWS_EC2_KEY_NAME}.pem
 export INTERNAL_TLD         := ${CLUSTER_NAME}.kz8s
 
 export HYPERKUBE_IMAGE      ?= quay.io/coreos/hyperkube
-export HYPERKUBE_TAG        ?= v1.7.2_coreos.0
+export HYPERKUBE_TAG        ?= v1.7.4_coreos.0
 
 export CIDR_VPC             ?= 10.0.0.0/16
 export CIDR_PODS            ?= 10.2.0.0/16

README.md

@@ -42,7 +42,7 @@ $ make clean
 component / tool | version
 ---------------- | -------:
 Container Linux by CoreOS | 1409.7.0, 1465.3.0, 1492.1.0
-kubernetes                | 1.7.2
+kubernetes                | 1.7.4
 flanneld                  | 0.7.1
 docker                    | 1.12.6
 etcd                      | 3.1.6