package/docker-containerd: bump to version 1.2.1

This commit bumps docker-containerd to the latest tagged release, v1.2.1.

This release is compatible with the current docker engine release (18.09).

Signed-off-by: Christian Stewart <christian@paral.in>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

package/docker-containerd/docker-containerd.hash

@@ -1,3 +1,3 @@
 # Computed locally
-sha256	a946f4614d92d60361213ef18deab04ee73599e4567f1ff26f7a72841afe4fa2	docker-containerd-v1.1.3.tar.gz
+sha256	a2780aca4d72bb8aced14ca9de99bdc9a90bdaacb06c5ddd8378a66443c1d70f  docker-containerd-v1.2.1.tar.gz
 sha256  4bbe3b885e8cd1907ab4cf9a41e862e74e24b5422297a4f2fe524e6a30ada2b4	LICENSE

package/docker-containerd/docker-containerd.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-DOCKER_CONTAINERD_VERSION = v1.1.3
+DOCKER_CONTAINERD_VERSION = v1.2.1
 DOCKER_CONTAINERD_SITE = $(call github,containerd,containerd,$(DOCKER_CONTAINERD_VERSION))
 DOCKER_CONTAINERD_LICENSE = Apache-2.0
 DOCKER_CONTAINERD_LICENSE_FILES = LICENSE