more chef conn / jobs [2/2]

Chef:
    1) add unique index on connection info per url/client name to prevent duplication/confusion
    2) change the rake tasks a bit to make passing parameters more usable.
    
    Sample invocation to install a connection info:
     bundle exec rake  url="http://192.168.124.10:4000" name="crowbar" key_file=/home/crowbar/foo.pem crowbar:chef:inject_conn

Crowbar

    better index name for unique jobs, to be a bit more specic



 .../20130103013025_create_chef_conn_info.rb        |    3 ++-
 .../lib/barclamp_chef/inject_connection.rake       |   10 ++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

Crowbar-Pull-ID: 1cc2a88b06ece498758fd99a3d92d4c45c20a0f5

Crowbar-Release: development