Roll back kernel and os-base because of the zfs issue

kernel: 4.9.80
os-base: v2017.02.10-1

Dockerfile.dapper

@@ -64,7 +64,7 @@ ARG DOCKER_BUILD_VERSION=1.10.3
 ARG DOCKER_BUILD_PATCH_VERSION=v${DOCKER_BUILD_VERSION}-ros1
 ARG SELINUX_POLICY_URL=https://github.com/rancher/refpolicy/releases/download/v0.0.3/policy.29
 
-ARG KERNEL_VERSION_amd64=4.15.9-rancher
+ARG KERNEL_VERSION_amd64=4.9.80-rancher
 ARG KERNEL_URL_amd64=https://github.com/rancher/os-kernel/releases/download/v${KERNEL_VERSION_amd64}/linux-${KERNEL_VERSION_amd64}-x86.tar.gz
 
 ARG DOCKER_URL_amd64=https://get.docker.com/builds/Linux/x86_64/docker-${DOCKER_VERSION}.tgz
@@ -79,8 +79,8 @@ ARG OS_SERVICES_REPO=https://raw.githubusercontent.com/${OS_REPO}/os-services
 ARG IMAGE_NAME=${OS_REPO}/os
 ARG DFS_IMAGE=${OS_REPO}/docker:v${DOCKER_VERSION}-2
 
-ARG OS_BASE_URL_amd64=https://github.com/rancher/os-base/releases/download/v2018.02-1/os-base_amd64.tar.xz
-ARG OS_BASE_URL_arm64=https://github.com/rancher/os-base/releases/download/v2018.02-1/os-base_arm64.tar.xz
+ARG OS_BASE_URL_amd64=https://github.com/rancher/os-base/releases/download/v2017.02.10-1/os-base_amd64.tar.xz
+ARG OS_BASE_URL_arm64=https://github.com/rancher/os-base/releases/download/v2017.02.10-1/os-base_arm64.tar.xz
 
 ARG SYSTEM_DOCKER_VERSION=17.06-ros3
 ARG SYSTEM_DOCKER_URL_amd64=https://github.com/niusmallnan/os-system-docker/releases/download/${SYSTEM_DOCKER_VERSION}/docker-amd64-${SYSTEM_DOCKER_VERSION}.tgz