Update to CNI 0.7.0

Signed-off-by: Ian Campbell <ijc@docker.com>

Author: Ian Campbell

pkg/kubelet/Dockerfile

@@ -4,7 +4,7 @@ FROM linuxkit/alpine:cba395fbc278daee841106801aba1e1bd7e0f2f7 AS build
 # - scripts/mk-image-cache-lst and run `make refresh-image-caches` from top-level
 # - pkg/e2e-test/Dockerfile
 ENV kubernetes_version v1.9.2
-ENV cni_version        v0.6.0
+ENV cni_version        v0.7.0
 ENV critools_version   v1.0.0-alpha.0
 
 RUN apk add -U --no-cache \

yml/kube.yml

@@ -40,7 +40,7 @@ services:
     image: linuxkit/sshd:4f403fe5ae53dc3e45c8f6972dced9dddf900ae6
     cgroupsPath: systemreserved/sshd
   - name: kubelet
-    image: linuxkit/kubelet:1b3b31281092aef89c39107aeed90299aeaa19a7
+    image: linuxkit/kubelet:496c57f6b7d7fbea671823aa17e5d5c80ab23501
     cgroupsPath: podruntime/kubelet
 files:
   - path: etc/linuxkit.yml