Update GCP metadata provider

[ptone]

Updates the userdata key to the more common and documented user-data instead of userdata.

https://cloud.google.com/container-optimized-os/docs/how-to/create-configure-instance#using_cloud-init

Checks to see if the /run/config/ssh directory exists; this allows new ssh keys to be fetched on reboot.

Signed-off-by: Preston Holmes preston@ptone.com

[justincormack]

You need to change it at https://github.com/linuxkit/linuxkit/blob/master/src/cmd/linuxkit/gcp.go#L269 as well.

[GordonTheTurtle]

Please sign your commits following these rules:
https://github.com/moby/moby/blob/master/CONTRIBUTING.md#sign-your-work
The easiest way to do this is to amend the last commit:

$ git clone -b "gcp-fixes" git@github.com:ptone/linuxkit.git somewhere
$ cd somewhere
$ git rebase -i HEAD~842356988776
editor opens
change each 'pick' to 'edit'
save the file and quit
$ git commit --amend -s --no-edit
$ git rebase --continue # and repeat the amend for each commit
$ git push -f

Amending updates the existing PR. You DO NOT need to open a new one.

[rn]

I've build/push/signed the updated metadata package. In a separate commit, could you update the YAMLs to use the new version. Something like:

./scripts/update-component-sha.sh --image linuxkit/metadata:1b80de92a781d6884c26c8375a18698c3eb65111

should do the trick

[rn]

Ping. could you update the YAML files as suggested?

[rn]

will merge and then update the packages shortly