K8S dex-overlord.yaml ordering fix

[gmgreg]

ConfigMap must be defined before it can be used; moved the ConfigMap definition prior to the dec-overlord container definition in the yams file.

[ericchiang]

lgmt, though fyi you have the change from #421 in here as well. Please remove that and I can merge this change :)

[gmgreg]

Thanks. Should be okay now (please confirm).

[ericchiang]

@gmgreg please squash your commits: https://stackoverflow.com/questions/5189560/squash-my-last-x-commits-together-using-git

Your change history still record edits to the README, even if the net result is no changes to that file, so git is reporting a merge conflict.

[gmgreg]

Thanks for your patience (obviously I'm no git master). Hope this time works.

[ericchiang]

No problem. Thanks for your contribution!