[repo] don't shell out pem key create

[Mark Vanderwiel]

Current rake does a double shell for the create pem key from:

 if not File.exist?('.chef/validator.pem')
    sh %(chef exec ruby -e "require 'openssl'; File.binwrite('.chef/validator.pem', OpenSSL::PKey::RSA.new(2048).to_pem)")
  end

to simply:

  if not File.exist?('.chef/validator.pem')
    require 'openssl'
    File.binwrite('.chef/validator.pem', OpenSSL::PKey::RSA.new(2048).to_pem)
  end

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/186401

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/186401
Committed: https://git.openstack.org/cgit/stackforge/openstack-chef-repo/commit/?id=1e863ffbc1c5790d4a7cf562b3378a961a6995e3
Submitter: Jenkins
Branch: master

commit 1e863ffbc1c5790d4a7cf562b3378a961a6995e3
Author: Mark Vanderwiel <email address hidden>
Date: Thu May 28 09:14:17 2015 -0500

    Create pem key directly

    No need to use the shell for simple ruby code when creating the
    pem key.

    Change-Id: I60ffb6941e187abcc33f4fbe408a87be5c81f9c8
    Closes-Bug: #1459695

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-chef ocata-eol release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/openstack-chef-repo ocata-eol release.