Upgrades CoreOS, k8s, CNI plugins and crictl (#153)

* Upgrades k8s from 1.13.5 to 1.14.8, and upgrades CNI plugins and crictl.

* Modifies CNI plugin download url to include 'linux' in the file name, since that is now how things are.

* Exports all variables defined config.sh so that they are available to subprocesses.

config.sh

@@ -2,18 +2,18 @@
 # relevant settings.
 
 # stage3 coreos
-COREOS_VERSION=2135.6.0
-K8S_VERSION=v1.13.5
-CRI_VERSION=v1.13.0
-CNI_VERSION=v0.7.5
+export COREOS_VERSION=2247.5.0
+export K8S_VERSION=v1.14.8
+export CRI_VERSION=v1.16.1
+export CNI_VERSION=v0.8.2
 
 # stage1 mlxrom
-MLXROM_VERSION=3.4.816
-MLXROM_REGEXP_mlab_sandbox='mlab[1-4].[a-z]{3}[0-9]t.*'
-MLXROM_REGEXP_mlab_staging='mlab4.[a-z]{3}[0-9]{2}.*'
-MLXROM_REGEXP_mlab_oti='mlab[1-3].[a-z]{3}[0-9]{2}.*'
+export MLXROM_VERSION=3.4.816
+export MLXROM_REGEXP_mlab_sandbox='mlab[1-4].[a-z]{3}[0-9]t.*'
+export MLXROM_REGEXP_mlab_staging='mlab4.[a-z]{3}[0-9]{2}.*'
+export MLXROM_REGEXP_mlab_oti='mlab[1-3].[a-z]{3}[0-9]{2}.*'
 
 # stage1 isos
-ISO_REGEXP_mlab_sandbox='mlab[1-4].[a-z]{3}[0-9]t.*'
-ISO_REGEXP_mlab_staging='mlab4.[a-z]{3}[0-9]{2}.*'
-ISO_REGEXP_mlab_oti='mlab[1-3].[a-z]{3}[0-9]{2}.*'
+export ISO_REGEXP_mlab_sandbox='mlab[1-4].[a-z]{3}[0-9]t.*'
+export ISO_REGEXP_mlab_staging='mlab4.[a-z]{3}[0-9]{2}.*'
+export ISO_REGEXP_mlab_oti='mlab[1-3].[a-z]{3}[0-9]{2}.*'

setup_stage3_coreos.sh

@@ -61,7 +61,7 @@ pushd $IMAGEDIR
   # Install the cni binaries: bridge, flannel, host-local, ipvlan, loopback, and
   # others.
   mkdir -p squashfs-root/cni/bin
-  curl --location "https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-amd64-${CNI_VERSION}.tgz" \
+  curl --location "https://github.com/containernetworking/plugins/releases/download/${CNI_VERSION}/cni-plugins-linux-amd64-${CNI_VERSION}.tgz" \
     | tar --directory=squashfs-root/cni/bin -xz
 
   # Make all the shims so that network plugins can be debugged.