Remove unused code in CoreOS K8s bay driver

[Ton Ngo]

Some of the files in the template/fragments are left over from the bay driver refactoring, because the previous directory had scripts for both Fedora and CoreOS distro. It would be good to check for those that are left over and not used with CoreOS, so they can be cleaned up.
For example, make-cert-client.sh has been copied into make-cert-client-coreos.yaml. Similarly for make-cert.sh

While we are cleaning up, we can also rename the remaining files with "-coreos" suffix since this is redundant, we are already in the coreos bay driver. For instance:

magnum/drivers/k8s_coreos_v1/templates/fragments/enable-kube-proxy-master-coreos.yaml

[Eli Qiao (taget-9)]

This should be fixed by https://review.openstack.org/#/c/346636/1

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/346636
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=f081cf18e55ad85f87e94814a27788d6a825ed4e
Submitter: Jenkins
Branch: master

commit f081cf18e55ad85f87e94814a27788d6a825ed4e
Author: Eli Qiao <email address hidden>
Date: Mon Jul 25 15:52:13 2016 +0800

    k8s_coreos_driver: cleanup file naming

    Since we have seperate template files to different driver directory, we
    can cleanup -coreos suffix from template.

    1. Remove unused shell scripts.
    2. Remove kube-examples.yaml and kube-user.yaml which is never used.

    Closes-bug: #1606655
    Change-Id: I6ac93ad23e7ae30ad1eb9be1c79c2cf36af8db0c

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/magnum 3.0.0 release.