Description of problem:

When provisioning the same container name twice from CLI it returns the message "422 Unprocessable Entity". It should expose the message returned by API: "Name has already been taken"


Version-Release number of selected component (if applicable):

Satellite-6.1.0-RHEL-7-20150429.2


How reproducible:
Aways


Steps to Reproduce:
1. hammer -u admin -p changeme docker container create --name hello --command bash --repository-name busybox --tag latest --compute-resource-id 1
2. hammer -v -d -u admin -p changeme docker container create --name hello --command bash --repository-name busybox --tag latest --compute-resource-id 1

Actual results:
A non clear message is being displayed

Expected results:
A better message should be displayed. API returns "Name has already been taken"

Additional info:

 hammer -v -d -u admin -p changeme docker container create --name hello --command bash --repository-name busybox --tag latest --compute-resource-id 1
[ INFO 2015-05-04 16:04:54 Init] Initialization of Hammer CLI (0.1.4.9) has started...
[DEBUG 2015-05-04 16:04:54 Init] Running at ruby 2.0.0-p598
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli_config.yml has been loaded
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman.yml has been loaded
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_bootdisk.yml has been loaded
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_discovery.yml has been loaded
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli.modules.d/foreman_docker.yml has been loaded
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli.modules.d/gutterball.yml has been loaded
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli.modules.d/import.yml has been loaded
[ INFO 2015-05-04 16:04:54 Init] Configuration from the file /etc/hammer/cli.modules.d/katello.yml has been loaded
[DEBUG 2015-05-04 16:04:55 Connection] Registered: foreman
[DEBUG 2015-05-04 16:04:55 API] Global headers: {
        :content_type => "application/json",
              :accept => "application/json;version=2",
    "Accept-Language" => "en"
}
[ INFO 2015-05-04 16:04:55 Modules] Extension module hammer_cli_foreman (0.1.4.10) loaded
[ INFO 2015-05-04 16:04:55 Modules] Extension module hammer_cli_foreman_bootdisk (0.1.2.6) loaded
[ INFO 2015-05-04 16:04:55 Modules] Extension module hammer_cli_foreman_discovery (0.0.1.8) loaded
[ INFO 2015-05-04 16:04:55 HammerCLI::MainCommand] subcommand organization (HammerCLIForeman::Organization) was removed.
[ INFO 2015-05-04 16:04:55 HammerCLI::MainCommand] subcommand organization (HammerCLIKatello::Organization) was created.
[ INFO 2015-05-04 16:04:55 Modules] Extension module hammer_cli_import (0.10.6.5) loaded
[ INFO 2015-05-04 16:04:55 Modules] Extension module hammer_cli_katello (0.0.7.9) loaded
[DEBUG 2015-05-04 16:04:55 Init] Using locale 'en'
[DEBUG 2015-05-04 16:04:55 Init] 'mo' files for locale domain 'hammer-cli' loaded from '/usr/share/gems/gems/hammer_cli-0.1.4.9/locale'
[DEBUG 2015-05-04 16:04:55 Init] 'mo' files for locale domain 'hammer-cli@system' loaded from '/usr/share/locale'
[DEBUG 2015-05-04 16:04:55 Init] 'mo' files for locale domain 'hammer-cli-foreman' loaded from '/usr/share/gems/gems/hammer_cli_foreman-0.1.4.10/locale'
[DEBUG 2015-05-04 16:04:55 Init] 'mo' files for locale domain 'hammer-cli-foreman@system' loaded from '/usr/share/locale'
[DEBUG 2015-05-04 16:04:55 Init] 'mo' files for locale domain 'hammer_cli_foreman_docker' loaded from '/usr/share/gems/gems/hammer_cli_foreman_docker-0.0.3.2/locale'
[DEBUG 2015-05-04 16:04:55 Init] 'mo' files for locale domain 'hammer_cli_foreman_docker@system' loaded from '/usr/share/locale'
[DEBUG 2015-05-04 16:04:55 Init] 'mo' files for locale domain 'hammer-cli-katello' loaded from '/usr/share/gems/gems/hammer_cli_katello-0.0.7.9/locale'
[ INFO 2015-05-04 16:04:55 HammerCLI::MainCommand] Called with options: {"option_verbose"=>true, "option_debug"=>true, "option_username"=>"admin", "option_password"=>"***"}
[ INFO 2015-05-04 16:04:55 HammerCLIForemanDocker::DockerCommand] Called with options: {}
[ INFO 2015-05-04 16:04:55 HammerCLIForemanDocker::DockerContainerCommand] Called with options: {}
[ INFO 2015-05-04 16:04:55 HammerCLIForemanDocker::DockerContainerCommand::CreateCommand] Called with options: {"option_compute_resource_id"=>"1", "option_name"=>"hello", "option_repository_name"=>"busybox", "option_tag"=>"latest", "option_command"=>"bash"}
[ INFO 2015-05-04 16:04:55 API] POST /docker/api/v2/containers
[DEBUG 2015-05-04 16:04:55 API] Params: {
    "container" => {
                         "name" => "hello",
          "compute_resource_id" => "1",
              "repository_name" => "busybox",
                          "tag" => "latest",
                      "command" => "bash",
        "environment_variables" => {}
    }
}
[DEBUG 2015-05-04 16:04:55 API] Headers: {}
[DEBUG 2015-05-04 16:04:55 API] 422 Unprocessable Entity
{
           "errors" => {
        "name" => [
            [0] "has already been taken"
        ]
    },
    "full_messages" => [
        [0] "Name has already been taken"
    ]
}
[ERROR 2015-05-04 16:04:55 Exception] Error: 422 Unprocessable Entity
Could not create the container:
  Error: 422 Unprocessable Entity
[ERROR 2015-05-04 16:04:55 Exception]

RestClient::UnprocessableEntity (422 Unprocessable Entity):
    /usr/share/gems/gems/rest-client-1.6.7/lib/restclient/abstract_response.rb:48:in `return!'
    /usr/share/gems/gems/rest-client-1.6.7/lib/restclient/request.rb:230:in `process_result'
    /usr/share/gems/gems/rest-client-1.6.7/lib/restclient/request.rb:178:in `block in transmit'
    /usr/share/ruby/net/http.rb:852:in `start'
    /usr/share/gems/gems/rest-client-1.6.7/lib/restclient/request.rb:172:in `transmit'
    /usr/share/gems/gems/rest-client-1.6.7/lib/restclient/request.rb:64:in `execute'
    /usr/share/gems/gems/rest-client-1.6.7/lib/restclient/request.rb:33:in `execute'
    /usr/share/gems/gems/rest-client-1.6.7/lib/restclient/resource.rb:67:in `post'
    /usr/share/gems/gems/apipie-bindings-0.0.11/lib/apipie_bindings/api.rb:279:in `call_client'
    /usr/share/gems/gems/apipie-bindings-0.0.11/lib/apipie_bindings/api.rb:210:in `http_call'
    /usr/share/gems/gems/apipie-bindings-0.0.11/lib/apipie_bindings/api.rb:160:in `call'
    /usr/share/gems/gems/apipie-bindings-0.0.11/lib/apipie_bindings/resource.rb:14:in `call'
    /usr/share/gems/gems/hammer_cli-0.1.4.9/lib/hammer_cli/apipie/command.rb:43:in `send_request'
    /usr/share/gems/gems/hammer_cli_foreman-0.1.4.10/lib/hammer_cli_foreman/commands.rb:185:in `send_request'
    /usr/share/gems/gems/hammer_cli-0.1.4.9/lib/hammer_cli/apipie/command.rb:34:in `execute'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/command.rb:67:in `run'
    /usr/share/gems/gems/hammer_cli-0.1.4.9/lib/hammer_cli/abstract.rb:23:in `run'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/subcommand/execution.rb:11:in `execute'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/command.rb:67:in `run'
    /usr/share/gems/gems/hammer_cli-0.1.4.9/lib/hammer_cli/abstract.rb:23:in `run'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/subcommand/execution.rb:11:in `execute'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/command.rb:67:in `run'
    /usr/share/gems/gems/hammer_cli-0.1.4.9/lib/hammer_cli/abstract.rb:23:in `run'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/subcommand/execution.rb:11:in `execute'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/command.rb:67:in `run'
    /usr/share/gems/gems/hammer_cli-0.1.4.9/lib/hammer_cli/abstract.rb:23:in `run'
    /usr/share/gems/gems/clamp-0.6.2/lib/clamp/command.rb:125:in `run'
    /usr/share/gems/gems/hammer_cli-0.1.4.9/bin/hammer:108:in `<top (required)>'
    /usr/bin/hammer:23:in `load'
    /usr/bin/hammer:23:in `<main>'