Added direct HTTP deploy support

  The following new parameters were added to ironic.conf:
    - image_download_source: allowed values are swift,http.
      defaults to "swift"
    - http_image_subdir: The name of subdirectory under
      ronic-conductor node's HTTP root path. Defaults to
      "agent_images"

Related-Prod: PROD-32758
Change-Id: I468bcdb7b922292adf9e536339b857ab9c4ee4a4
2 files changed