Use chef-solo for all core Crowbar barclamps. [2/10]

This pull request has the following changes:

* Add a chef-solo jig that uses chef-solo to make changes to nodes.
  The chef jig still exists, but it is not used or installed by
  default.
* Port all roles that used the chef jig to use chef-solo, making
  whatever minor fixups are needed along the way.


 chef-solo                                          |  1 +
 chef/cookbooks/network/recipes/default.rb          | 44 ++++++++++++++++++----
 .../app/models/barclamp_network/network.rb         |  2 +-
 .../app/models/barclamp_network/role.rb            | 24 +++++++-----
 4 files changed, 53 insertions(+), 18 deletions(-)

Crowbar-Pull-ID: bbc20a06dbbdfd0b2f1725d18b4220bf28a9a536

Crowbar-Release: development