Upgrade Docker, from 18.06.1-ce to 18.06.2-ce

[afbjorklund]

CVE-2019-5736

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[afbjorklund]

Typical, this tarball has the wrong docker-runc ! So it doesn't address the issue (useless)

Wrong:

runc version 1.0.0-rc5+dev.docker-18.06
commit: 69663f0bd4b60df09991c08812a60108003fa340
spec: 1.0.0

opencontainers/runc@69663f0

Correct:

runc version 1.0.0-rc5+dev.docker-18.06
commit: a592beb5bc4c4092b1b1bac971afed27687340c5
spec: 1.0.0

docker-archive/runc@a592beb

There is also a conflict with the "runc-master" package, that also installs docker-runc (!)

[afbjorklund]

Since we are not using docker-runc anyway, this problem a592beb should be addressed in #3669

opencontainers/runc@6635b4f

Unfortunately there is no backport of 28a697c to docker/18.06 anyway, so it would have been lost.

opencontainers/runc@12f6a99

[tstromberg]

Feel free to merge once you are happy with what this PR is doing.

[afbjorklund]

I think this can go in with the runc update, and we would still accomplish the same kind of update.