Update packages

[tjkirch]

Description of changes:

This updates almost all of our third-party dependencies in packages/. Exceptions:

• containerd 1.4, which seems like a fairly major update and I thought was worth doing separately.
• ecs-agent; it's a separate project to figure out the impact from upstream changing data store format.

429ce2ed Bump versions of docker-init and docker-proxy to match docker
    The versioning is there for consistency and doesn't reflect upstream versions
    of tini or libnetwork, so it should match the docker we now ship.
63abf1d0 docker-proxy: update to 026aabaa65 to match docker 19.03.13
1214f5ec wicked: update to 0.6.64
688b864b strace: update to 5.9
ca39e801 libxcrypt: update to 4.4.17
6e8d80b6 libnftnl: update to 1.1.8
e1500c62 libexpat: update to 2.2.10
f67771b2 libcap: update to 2.44
97ef7344 kubernetes-1.18: update to 1.18.10
3650c972 kubernetes-1.17: update to 1.17.13
6c8a45f0 kubernetes-1.16: update to 1.16.15
2ee14ed6 kernel: update to 5.4.68
3510d176 iputils: update to 20200821
ec3d97c7 iptables: update to 1.8.6
96091c34 iproute: update to 5.9.0
fe6f819a docker-engine: update to 19.03.13
    Upstream no longer publishes releases to the docker/docker-engine repo, so this
    required some spec file rework to pull from the moby/moby repo.
4d888acf docker-cli: update to 19.03.13
d253477b cni-plugins: update to 0.8.7
073395ea chrony: update to 4.0
746f48b5 ca-certificates: update to 2020.10.14
b1315cf5 aws-iam-authenticator: update to 0.5.2

Testing done:

• aws-k8s 1.15, 1.16, 1.17, 1.18 on x86_64
  • run pods OK
  • systemctl status running
  • journalctl looks good
  • chrony (major version update) working - sources, sourcestats, activity from admin container's chronyc look good, no seccomp errors
• aws-k8s 1.17 aarch64
  • same - made sure there were no differences in syscalls causing chrony seccomp failure
  • had to run busybox:musl pod instead of busybox, see Interactive busybox:latest image segfaults under Docker on Arm instances #1083
• aws-ecs-1
  • s/pod/task/ - ran OK
• aws-dev
  • s/pod/container/ - ran OK

Terms of contribution:

By submitting this pull request, I agree that this contribution is dual-licensed under the terms of both the Apache License, version 2.0, and the MIT license.